Finding the Third Proportional to 17,728 and 19,392

Step by Step Solution

1. Step 1: Write the proportion equation
   17,728 : 19,392 = 19,392 : x
2. Step 2: Convert to fraction form
   17,728/19,392 = 19,392/x
3. Step 3: Cross multiply
   17,728x = 19,392 × 19,392
4. Step 4: Simplify right side
   17,728x = 376,049,664
5. Step 5: Solve for x
   x = 376,049,664/17,728
6. Step 6: Final answer
   x = 21,212.19