Finding the Third Proportional to 19,728 and 31,392

Step by Step Solution

1. Step 1: Write the proportion equation
   19,728 : 31,392 = 31,392 : x
2. Step 2: Convert to fraction form
   19,728/31,392 = 31,392/x
3. Step 3: Cross multiply
   19,728x = 31,392 × 31,392
4. Step 4: Simplify right side
   19,728x = 985,457,664
5. Step 5: Solve for x
   x = 985,457,664/19,728
6. Step 6: Final answer
   x = 49,952.23