Finding the Third Proportional to 21,057.25 and 31,553.25

Step by Step Solution

1. Step 1: Write the proportion equation
   21,057.25 : 31,553.25 = 31,553.25 : x
2. Step 2: Convert to fraction form
   21,057.25/31,553.25 = 31,553.25/x
3. Step 3: Cross multiply
   21,057.25x = 31,553.25 × 31,553.25
4. Step 4: Simplify right side
   21,057.25x = 995,607,585.56
5. Step 5: Solve for x
   x = 995,607,585.56/21,057.25
6. Step 6: Final answer
   x = 47,280.99