Salutations!
Round 5,370,288 to the nearest 100,000
To round the number to the nearest hundred thousands, you need to know whether the number next to hundred thousands is greater than 5 or lesser than 5. If it's greater than 5, round up by adding plus 1 to the hundred thousands place. If it's lesser than 5, round down by adding zeros accordingly.
5,370,288 rounded to the nearest thousands is 5,400,000.
Hope I helped :D