Finding the Third Proportional to 20,129 and 21,951

Step by Step Solution

1. Step 1: Write the proportion equation
   20,129 : 21,951 = 21,951 : x
2. Step 2: Convert to fraction form
   20,129/21,951 = 21,951/x
3. Step 3: Cross multiply
   20,129x = 21,951 × 21,951
4. Step 4: Simplify right side
   20,129x = 481,846,401
5. Step 5: Solve for x
   x = 481,846,401/20,129
6. Step 6: Final answer
   x = 23,937.92