Finding the Third Proportional to 169,042.50 and 261,612

Step by Step Solution

1. Step 1: Write the proportion equation
   169,042.50 : 261,612 = 261,612 : x
2. Step 2: Convert to fraction form
   169,042.50/261,612 = 261,612/x
3. Step 3: Cross multiply
   169,042.50x = 261,612 × 261,612
4. Step 4: Simplify right side
   169,042.50x = 68,440,838,544
5. Step 5: Solve for x
   x = 68,440,838,544/169,042.50
6. Step 6: Final answer
   x = 404,873.56