Finding the Third Proportional to 12,726 and 16,469

Step by Step Solution

1. Step 1: Write the proportion equation
   12,726 : 16,469 = 16,469 : x
2. Step 2: Convert to fraction form
   12,726/16,469 = 16,469/x
3. Step 3: Cross multiply
   12,726x = 16,469 × 16,469
4. Step 4: Simplify right side
   12,726x = 271,227,961
5. Step 5: Solve for x
   x = 271,227,961/12,726
6. Step 6: Final answer
   x = 21,312.90