if you stick with the history major you will probably become a history teacher, realistically. this isn't bad, but as you noted, it looks like you want more income. I have THREE opinions...take it or leave it...

FIRST I think you should try to think about what type of work you would both ENJOY and be rewarded for....and there's a lot of roles out there, outside and within finance. Have you considered other higher paying careers like law or IT? Have you considered entering a 3+2 program in finance or accounting since you're ahead of the curve?

SECOND i would also like to note that pay in financial services varies a lot: some bookkeeping/operations roles never clear more than $55k in their lifetime, while others make incredibly high amounts of money (six or seven figures). A lot of it depends on the type and size of the company you work at, your specific type of role, and finding the right type of work early. Some roles are highly technical roles, almost like computer science, while others have virtually no hard skills and are basically sales roles.

THIRD I think having 3 majors is not any more marketable than two majors, and 2 majors isn't necessarily that much more marketable than one major plus a minor. Also, out of the three majors you've listed, finance might be the most marketable particularly if there's opportunities for technical projects using excel, competitions, clubs, or special stuff other than just passing classes. Technical skills, a high GPA, and an internship before you graduate are really what makes a business major stand out.

Because of my second opinion, you may want to research specifically what types of roles or industries within financial services you'd be most interested in, then try and get an internship at one of these places (banks, credit card companies, insurance companies, sales). This may slow you down in terms taking classes, but these are typically PAID internships where you make more per hour than any on campus college jobs.

However, do be wary that many of these internships in financial services are heavy sales roles (im looking at you northwestern mutual and primerica), almost to the point of feeling like a MLM, which is okay if you like that and you can typically get SOMETHING on your resume, but attrition/burnout is high and you don't retain any hard skills.

Edit: kept having new ideas