Answer
$1,278,000$
Work Step by Step
We are given the number $1.278\times10^{6}$. Since the exponent is positive, move the decimal 6 places to the right.
Note that 6 places to the right will be 3 decimal places past the last digit (8), so we will add 3 zeroes after 8.
$1.278\times10^{6}=1,278,000$