Step 1:
The first step to converting 685718.29084405 to a fraction is to re-write 685718.29084405 in the form p/q where p and q are both positive integers. To start with, 685718.29084405 can be written as simply 685718.29084405/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 685718.29084405, which in this case is 8. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 685718.29084405/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 685718.29084405/1 each by 100000000:
Step 3:
Now the last step is to simplify the fraction (if possible) by finding similar factors and cancelling them out, which leads to the following answer for 685718.29084405 as a fraction:
685718/1 / 1