Finding the Third Proportional to 20,761.31 and 31,387.50

Step by Step Solution

1. Step 1: Write the proportion equation
   20,761.31 : 31,387.50 = 31,387.50 : x
2. Step 2: Convert to fraction form
   20,761.31/31,387.50 = 31,387.50/x
3. Step 3: Cross multiply
   20,761.31x = 31,387.50 × 31,387.50
4. Step 4: Simplify right side
   20,761.31x = 985,175,156.25
5. Step 5: Solve for x
   x = 985,175,156.25/20,761.31
6. Step 6: Final answer
   x = 47,452.45