Finding the Third Proportional to 31,083.75 and 72,687.38

Step by Step Solution

1. Step 1: Write the proportion equation
   31,083.75 : 72,687.38 = 72,687.38 : x
2. Step 2: Convert to fraction form
   31,083.75/72,687.38 = 72,687.38/x
3. Step 3: Cross multiply
   31,083.75x = 72,687.38 × 72,687.38
4. Step 4: Simplify right side
   31,083.75x = 5,283,454,484.39
5. Step 5: Solve for x
   x = 5,283,454,484.39/31,083.75
6. Step 6: Final answer
   x = 169,974.81