A lot of midwits in this thread.
Double majoring is a smoothbrain move made by neurotic LOOK AT ME gold-star-sticker tryhard fags that will peak upon getting it to subsequently burn out or go to a mental institution shortly thereafter. It confers neither career nor graduate admissions advantage, and carries with it a larger workload that, in point of fact, does jeopardizes those prospects by endangering GPA and networking opportunities as you'll be burdened with more homework and studying. If you want to advance yourself in college, go for research programs and/or internships. That is better than taking pseud classes for a pseud major to be added to your piece of paper that nobody will care about. If you want to go to the next level, just graduate as soon as possible with a good GPA and go beyond undergraduate (shit tier) education.