Finding the Third Proportional to 57,637.50 and 86,456.25

Step by Step Solution

1. Step 1: Write the proportion equation
   57,637.50 : 86,456.25 = 86,456.25 : x
2. Step 2: Convert to fraction form
   57,637.50/86,456.25 = 86,456.25/x
3. Step 3: Cross multiply
   57,637.50x = 86,456.25 × 86,456.25
4. Step 4: Simplify right side
   57,637.50x = 7,474,683,164.06
5. Step 5: Solve for x
   x = 7,474,683,164.06/57,637.50
6. Step 6: Final answer
   x = 129,684.38