Finding the Third Proportional to 66,472.88 and 99,757.88

Step by Step Solution

1. Step 1: Write the proportion equation
   66,472.88 : 99,757.88 = 99,757.88 : x
2. Step 2: Convert to fraction form
   66,472.88/99,757.88 = 99,757.88/x
3. Step 3: Cross multiply
   66,472.88x = 99,757.88 × 99,757.88
4. Step 4: Simplify right side
   66,472.88x = 9,951,633,624.52
5. Step 5: Solve for x
   x = 9,951,633,624.52/66,472.88
6. Step 6: Final answer
   x = 149,709.69