Finding the Third Proportional to 55,621.50 and 86,132.25

Step by Step Solution

1. Step 1: Write the proportion equation
   55,621.50 : 86,132.25 = 86,132.25 : x
2. Step 2: Convert to fraction form
   55,621.50/86,132.25 = 86,132.25/x
3. Step 3: Cross multiply
   55,621.50x = 86,132.25 × 86,132.25
4. Step 4: Simplify right side
   55,621.50x = 7,418,764,490.06
5. Step 5: Solve for x
   x = 7,418,764,490.06/55,621.50
6. Step 6: Final answer
   x = 133,379.44