Finding the Third Proportional to 15,392.25 and 21,981.38

Step by Step Solution

1. Step 1: Write the proportion equation
   15,392.25 : 21,981.38 = 21,981.38 : x
2. Step 2: Convert to fraction form
   15,392.25/21,981.38 = 21,981.38/x
3. Step 3: Cross multiply
   15,392.25x = 21,981.38 × 21,981.38
4. Step 4: Simplify right side
   15,392.25x = 483,180,846.89
5. Step 5: Solve for x
   x = 483,180,846.89/15,392.25
6. Step 6: Final answer
   x = 31,391.18