Finding the Third Proportional to 21,456.25 and 31,416.38

Step by Step Solution

1. Step 1: Write the proportion equation
   21,456.25 : 31,416.38 = 31,416.38 : x
2. Step 2: Convert to fraction form
   21,456.25/31,416.38 = 31,416.38/x
3. Step 3: Cross multiply
   21,456.25x = 31,416.38 × 31,416.38
4. Step 4: Simplify right side
   21,456.25x = 986,988,618.14
5. Step 5: Solve for x
   x = 986,988,618.14/21,456.25
6. Step 6: Final answer
   x = 46,000.05