Finding the Third Proportional to 12,979 and 20,025

Step by Step Solution

1. Step 1: Write the proportion equation
   12,979 : 20,025 = 20,025 : x
2. Step 2: Convert to fraction form
   12,979/20,025 = 20,025/x
3. Step 3: Cross multiply
   12,979x = 20,025 × 20,025
4. Step 4: Simplify right side
   12,979x = 401,000,625
5. Step 5: Solve for x
   x = 401,000,625/12,979
6. Step 6: Final answer
   x = 30,896.11