Finding the Third Proportional to 20,487.66 and 31,641.38

Step by Step Solution

1. Step 1: Write the proportion equation
   20,487.66 : 31,641.38 = 31,641.38 : x
2. Step 2: Convert to fraction form
   20,487.66/31,641.38 = 31,641.38/x
3. Step 3: Cross multiply
   20,487.66x = 31,641.38 × 31,641.38
4. Step 4: Simplify right side
   20,487.66x = 1,001,176,611.89
5. Step 5: Solve for x
   x = 1,001,176,611.89/20,487.66
6. Step 6: Final answer
   x = 48,867.31