Finding the Third Proportional to 20,215.50 and 31,029.38

Step by Step Solution

1. Step 1: Write the proportion equation
   20,215.50 : 31,029.38 = 31,029.38 : x
2. Step 2: Convert to fraction form
   20,215.50/31,029.38 = 31,029.38/x
3. Step 3: Cross multiply
   20,215.50x = 31,029.38 × 31,029.38
4. Step 4: Simplify right side
   20,215.50x = 962,822,112.89
5. Step 5: Solve for x
   x = 962,822,112.89/20,215.50
6. Step 6: Final answer
   x = 47,627.91