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Re:Of the 1%, by the 1%, for the 1% by dschobel on Sunday April 03, 2011 @07:39AM (#2402458)
The highest mean salary in the US (according to the Dept. of Labor) is "surgeon" at $219,770.

So, to answer your question, there is no profession (in the USA, at least) with "a high degree of certainty" of hitting $500k.

http://www.bls.gov/oes/current/oes_nat.htm

Re:Of the 1%, by the 1%, for the 1% by rudiger on Sunday April 03, 2011 @07:44AM (#2402467)
For "high degree of certainty", a median or percentile figure would be a better predictor than a mean.