Finding the Third Proportional to 57,710.25 and 86,945.63

Step by Step Solution

1. Step 1: Write the proportion equation
   57,710.25 : 86,945.63 = 86,945.63 : x
2. Step 2: Convert to fraction form
   57,710.25/86,945.63 = 86,945.63/x
3. Step 3: Cross multiply
   57,710.25x = 86,945.63 × 86,945.63
4. Step 4: Simplify right side
   57,710.25x = 7,559,541,706.64
5. Step 5: Solve for x
   x = 7,559,541,706.64/57,710.25
6. Step 6: Final answer
   x = 130,991.32