2,456,000 scientific notation ?

Question 1
2.456 x 10^6

Question 2
3.4125 x 10^4

Question 3
Has not been completed !

2,456,000 = 2.456x10 to the power 6

34,125 = 3.4125x10 to the power 4

Put the decimal inbetween the 1st and 2nd numbers, count the numbers after the decimal and put x10^____ (fill in the blank with however many numbers there are.

2.456 x 10 ^ 6

3.4125 x 10 ^ 4

1)
2456000
= 2.456 x 10^6

2)
34125
= 3.4125 x 10^4

2.456 x 10 to the 6
3.4125 x 10 to the 4

Which "following number"? You haven't listed one.

I think 2.456 X 10^6
3.4125X10^4

2,456,000 = 2.456 * 10^6

34,125 = 3.4125 * 10^4