Finding the Third Proportional to 10,938 and 20,499

Step by Step Solution

1. Step 1: Write the proportion equation
   10,938 : 20,499 = 20,499 : x
2. Step 2: Convert to fraction form
   10,938/20,499 = 20,499/x
3. Step 3: Cross multiply
   10,938x = 20,499 × 20,499
4. Step 4: Simplify right side
   10,938x = 420,209,001
5. Step 5: Solve for x
   x = 420,209,001/10,938
6. Step 6: Final answer
   x = 38,417.35