Finding the Third Proportional to 20,898 and 31,731

Step by Step Solution

1. Step 1: Write the proportion equation
   20,898 : 31,731 = 31,731 : x
2. Step 2: Convert to fraction form
   20,898/31,731 = 31,731/x
3. Step 3: Cross multiply
   20,898x = 31,731 × 31,731
4. Step 4: Simplify right side
   20,898x = 1,006,856,361
5. Step 5: Solve for x
   x = 1,006,856,361/20,898
6. Step 6: Final answer
   x = 48,179.56