Finding the Third Proportional to 31,605.19 and 69,042.38

Step by Step Solution

1. Step 1: Write the proportion equation
   31,605.19 : 69,042.38 = 69,042.38 : x
2. Step 2: Convert to fraction form
   31,605.19/69,042.38 = 69,042.38/x
3. Step 3: Cross multiply
   31,605.19x = 69,042.38 × 69,042.38
4. Step 4: Simplify right side
   31,605.19x = 4,766,849,545.64
5. Step 5: Solve for x
   x = 4,766,849,545.64/31,605.19
6. Step 6: Final answer
   x = 150,824.91