Finding the Third Proportional to 12,898 and 20,451

Step by Step Solution

1. Step 1: Write the proportion equation
   12,898 : 20,451 = 20,451 : x
2. Step 2: Convert to fraction form
   12,898/20,451 = 20,451/x
3. Step 3: Cross multiply
   12,898x = 20,451 × 20,451
4. Step 4: Simplify right side
   12,898x = 418,243,401
5. Step 5: Solve for x
   x = 418,243,401/12,898
6. Step 6: Final answer
   x = 32,427.00