Finding the Third Proportional to 17,432 and 18,872

Step by Step Solution

1. Step 1: Write the proportion equation
   17,432 : 18,872 = 18,872 : x
2. Step 2: Convert to fraction form
   17,432/18,872 = 18,872/x
3. Step 3: Cross multiply
   17,432x = 18,872 × 18,872
4. Step 4: Simplify right side
   17,432x = 356,152,384
5. Step 5: Solve for x
   x = 356,152,384/17,432
6. Step 6: Final answer
   x = 20,430.95