Finding the Third Proportional to 20,479.50 and 31,564.69

Step by Step Solution

1. Step 1: Write the proportion equation
   20,479.50 : 31,564.69 = 31,564.69 : x
2. Step 2: Convert to fraction form
   20,479.50/31,564.69 = 31,564.69/x
3. Step 3: Cross multiply
   20,479.50x = 31,564.69 × 31,564.69
4. Step 4: Simplify right side
   20,479.50x = 996,329,496.97
5. Step 5: Solve for x
   x = 996,329,496.97/20,479.50
6. Step 6: Final answer
   x = 48,650.09