Step 1:
The first step to converting 298118778.172 to a fraction is to re-write 298118778.172 in the form p/q where p and q are both positive integers. To start with, 298118778.172 can be written as simply 298118778.172/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 298118778.172, which in this case is 3. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 298118778.172/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 298118778.172/1 each by 1000:
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 298118778.172 as a fraction:
298118778/1 / 1