Finding the Third Proportional to 10,057.50 and 20,391.75

Step by Step Solution

1. Step 1: Write the proportion equation
   10,057.50 : 20,391.75 = 20,391.75 : x
2. Step 2: Convert to fraction form
   10,057.50/20,391.75 = 20,391.75/x
3. Step 3: Cross multiply
   10,057.50x = 20,391.75 × 20,391.75
4. Step 4: Simplify right side
   10,057.50x = 415,823,468.06
5. Step 5: Solve for x
   x = 415,823,468.06/10,057.50
6. Step 6: Final answer
   x = 41,344.62