Finding the Third Proportional to 64,165.50 and 99,900

Step by Step Solution

1. Step 1: Write the proportion equation
   64,165.50 : 99,900 = 99,900 : x
2. Step 2: Convert to fraction form
   64,165.50/99,900 = 99,900/x
3. Step 3: Cross multiply
   64,165.50x = 99,900 × 99,900
4. Step 4: Simplify right side
   64,165.50x = 9,980,010,000
5. Step 5: Solve for x
   x = 9,980,010,000/64,165.50
6. Step 6: Final answer
   x = 155,535.45