Finding the Third Proportional to 64,499.25 and 99,624.75

Step by Step Solution

1. Step 1: Write the proportion equation
   64,499.25 : 99,624.75 = 99,624.75 : x
2. Step 2: Convert to fraction form
   64,499.25/99,624.75 = 99,624.75/x
3. Step 3: Cross multiply
   64,499.25x = 99,624.75 × 99,624.75
4. Step 4: Simplify right side
   64,499.25x = 9,925,090,812.56
5. Step 5: Solve for x
   x = 9,925,090,812.56/64,499.25
6. Step 6: Final answer
   x = 153,879.17