Finding the Third Proportional to 17,792 and 21,392

Step by Step Solution

1. Step 1: Write the proportion equation
   17,792 : 21,392 = 21,392 : x
2. Step 2: Convert to fraction form
   17,792/21,392 = 21,392/x
3. Step 3: Cross multiply
   17,792x = 21,392 × 21,392
4. Step 4: Simplify right side
   17,792x = 457,617,664
5. Step 5: Solve for x
   x = 457,617,664/17,792
6. Step 6: Final answer
   x = 25,720.42