Finding the Third Proportional to 29,478.94 and 63,639.42

Step by Step Solution

1. Step 1: Write the proportion equation
   29,478.94 : 63,639.42 = 63,639.42 : x
2. Step 2: Convert to fraction form
   29,478.94/63,639.42 = 63,639.42/x
3. Step 3: Cross multiply
   29,478.94x = 63,639.42 × 63,639.42
4. Step 4: Simplify right side
   29,478.94x = 4,049,976,016.58
5. Step 5: Solve for x
   x = 4,049,976,016.58/29,478.94
6. Step 6: Final answer
   x = 137,385.41