Finding the Third Proportional to 12,802 and 20,039

Step by Step Solution

1. Step 1: Write the proportion equation
   12,802 : 20,039 = 20,039 : x
2. Step 2: Convert to fraction form
   12,802/20,039 = 20,039/x
3. Step 3: Cross multiply
   12,802x = 20,039 × 20,039
4. Step 4: Simplify right side
   12,802x = 401,561,521
5. Step 5: Solve for x
   x = 401,561,521/12,802
6. Step 6: Final answer
   x = 31,367.09