Finding the Third Proportional to 12,589 and 17,643

Step by Step Solution

1. Step 1: Write the proportion equation
   12,589 : 17,643 = 17,643 : x
2. Step 2: Convert to fraction form
   12,589/17,643 = 17,643/x
3. Step 3: Cross multiply
   12,589x = 17,643 × 17,643
4. Step 4: Simplify right side
   12,589x = 311,275,449
5. Step 5: Solve for x
   x = 311,275,449/12,589
6. Step 6: Final answer
   x = 24,725.99