Finding the Third Proportional to 68,179.50 and 99,231.75

Step by Step Solution

1. Step 1: Write the proportion equation
   68,179.50 : 99,231.75 = 99,231.75 : x
2. Step 2: Convert to fraction form
   68,179.50/99,231.75 = 99,231.75/x
3. Step 3: Cross multiply
   68,179.50x = 99,231.75 × 99,231.75
4. Step 4: Simplify right side
   68,179.50x = 9,846,940,208.06
5. Step 5: Solve for x
   x = 9,846,940,208.06/68,179.50
6. Step 6: Final answer
   x = 144,426.70