Finding the Third Proportional to 57,753.69 and 86,395.50

Step by Step Solution

1. Step 1: Write the proportion equation
   57,753.69 : 86,395.50 = 86,395.50 : x
2. Step 2: Convert to fraction form
   57,753.69/86,395.50 = 86,395.50/x
3. Step 3: Cross multiply
   57,753.69x = 86,395.50 × 86,395.50
4. Step 4: Simplify right side
   57,753.69x = 7,464,182,420.25
5. Step 5: Solve for x
   x = 7,464,182,420.25/57,753.69
6. Step 6: Final answer
   x = 129,241.66