Finding the Third Proportional to 64,765.50 and 99,917.25

Step by Step Solution

1. Step 1: Write the proportion equation
   64,765.50 : 99,917.25 = 99,917.25 : x
2. Step 2: Convert to fraction form
   64,765.50/99,917.25 = 99,917.25/x
3. Step 3: Cross multiply
   64,765.50x = 99,917.25 × 99,917.25
4. Step 4: Simplify right side
   64,765.50x = 9,983,456,847.56
5. Step 5: Solve for x
   x = 9,983,456,847.56/64,765.50
6. Step 6: Final answer
   x = 154,147.76