Round 192645417 to nearest hundred thousand

How much is a hundred thousand?

100 000

So we know that the last 5 places of the rounded number are 0s.

So, is it

192600000?

Well, it depends on the first digit that gets replaced by 0: if it's 4 or smaller, (it is) then yes. (else we need to round up). So it's

192600000.