Finding the Third Proportional to 12,810 and 20,049

Step by Step Solution

1. Step 1: Write the proportion equation
   12,810 : 20,049 = 20,049 : x
2. Step 2: Convert to fraction form
   12,810/20,049 = 20,049/x
3. Step 3: Cross multiply
   12,810x = 20,049 × 20,049
4. Step 4: Simplify right side
   12,810x = 401,962,401
5. Step 5: Solve for x
   x = 401,962,401/12,810
6. Step 6: Final answer
   x = 31,378.80