The median of the three numbers, the one which appears in the middle when you place them in order, is 350.
126, 252, 378 . . .
63, 126, 189, 252, 315, 378, 441, 504, 567, 630, 693, 756, 819, 882, 945, . . . forever
126, 252, 378
126, 252, 378 and so on.
126, 252 and 378.
126, 252, 378 and so on.
126, 252, 378
126, 252, 378
126, 252, 378, 504, 630, 756, 882 . . .
126, 252, 378
42, 84, 126, 168, 210, 252, 294, 336, 378, . . .
126, 252, 378 and so on.