Finding the Third Proportional to 57,449.25 and 86,244.75

Step by Step Solution

1. Step 1: Write the proportion equation
   57,449.25 : 86,244.75 = 86,244.75 : x
2. Step 2: Convert to fraction form
   57,449.25/86,244.75 = 86,244.75/x
3. Step 3: Cross multiply
   57,449.25x = 86,244.75 × 86,244.75
4. Step 4: Simplify right side
   57,449.25x = 7,438,156,902.56
5. Step 5: Solve for x
   x = 7,438,156,902.56/57,449.25
6. Step 6: Final answer
   x = 129,473.52