Finding the Third Proportional to 64,450.50 and 99,591.75

Step by Step Solution

1. Step 1: Write the proportion equation
   64,450.50 : 99,591.75 = 99,591.75 : x
2. Step 2: Convert to fraction form
   64,450.50/99,591.75 = 99,591.75/x
3. Step 3: Cross multiply
   64,450.50x = 99,591.75 × 99,591.75
4. Step 4: Simplify right side
   64,450.50x = 9,918,516,668.06
5. Step 5: Solve for x
   x = 9,918,516,668.06/64,450.50
6. Step 6: Final answer
   x = 153,893.56