Finding the Third Proportional to 169,557 and 262,129.50

Step by Step Solution

1. Step 1: Write the proportion equation
   169,557 : 262,129.50 = 262,129.50 : x
2. Step 2: Convert to fraction form
   169,557/262,129.50 = 262,129.50/x
3. Step 3: Cross multiply
   169,557x = 262,129.50 × 262,129.50
4. Step 4: Simplify right side
   169,557x = 68,711,874,770.25
5. Step 5: Solve for x
   x = 68,711,874,770.25/169,557
6. Step 6: Final answer
   x = 405,243.52