Finding the Third Proportional to 45,385.31 and 63,478.69

Step by Step Solution

1. Step 1: Write the proportion equation
   45,385.31 : 63,478.69 = 63,478.69 : x
2. Step 2: Convert to fraction form
   45,385.31/63,478.69 = 63,478.69/x
3. Step 3: Cross multiply
   45,385.31x = 63,478.69 × 63,478.69
4. Step 4: Simplify right side
   45,385.31x = 4,029,543,766.72
5. Step 5: Solve for x
   x = 4,029,543,766.72/45,385.31
6. Step 6: Final answer
   x = 88,785.19