Finding the Third Proportional to 57,716.50 and 86,741.75

Step by Step Solution

1. Step 1: Write the proportion equation
   57,716.50 : 86,741.75 = 86,741.75 : x
2. Step 2: Convert to fraction form
   57,716.50/86,741.75 = 86,741.75/x
3. Step 3: Cross multiply
   57,716.50x = 86,741.75 × 86,741.75
4. Step 4: Simplify right side
   57,716.50x = 7,524,131,193.06
5. Step 5: Solve for x
   x = 7,524,131,193.06/57,716.50
6. Step 6: Final answer
   x = 130,363.61