Which is better for a career in Finance?

I plan to go into the Financial field after graduating with a degree in Math/Finance. I really wanna learn a 3rd language before I graduate (I know English and Spanish). I feel it will give me a leg up on getting a job. I dont know what language would be the most useful for a career in finance and financial markets more specifically.

I was thinking French or German b/c Germany has a large Finance sector but France is more widely used globally?