Step 1:
The first step to converting 12128456.698655 to a fraction is to re-write 12128456.698655 in the form p/q where p and q are both positive integers. To start with, 12128456.698655 can be written as simply 12128456.698655/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 12128456.698655, which in this case is 6. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 12128456.698655/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 12128456.698655/1 each by 1000000:
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 12128456.698655 as a fraction:
12128456/1 / 1