Finding the Third Proportional to 154,417.50 and 231,997.50

Step by Step Solution

1. Step 1: Write the proportion equation
   154,417.50 : 231,997.50 = 231,997.50 : x
2. Step 2: Convert to fraction form
   154,417.50/231,997.50 = 231,997.50/x
3. Step 3: Cross multiply
   154,417.50x = 231,997.50 × 231,997.50
4. Step 4: Simplify right side
   154,417.50x = 53,822,840,006.25
5. Step 5: Solve for x
   x = 53,822,840,006.25/154,417.50
6. Step 6: Final answer
   x = 348,554.02