Finding the Third Proportional to 4,471.50 and 9,520.50

Step by Step Solution

1. Step 1: Write the proportion equation
   4,471.50 : 9,520.50 = 9,520.50 : x
2. Step 2: Convert to fraction form
   4,471.50/9,520.50 = 9,520.50/x
3. Step 3: Cross multiply
   4,471.50x = 9,520.50 × 9,520.50
4. Step 4: Simplify right side
   4,471.50x = 90,639,920.25
5. Step 5: Solve for x
   x = 90,639,920.25/4,471.50
6. Step 6: Final answer
   x = 20,270.58