Finding the Third Proportional to 39,639.38 and 89,742.94

Step by Step Solution

1. Step 1: Write the proportion equation
   39,639.38 : 89,742.94 = 89,742.94 : x
2. Step 2: Convert to fraction form
   39,639.38/89,742.94 = 89,742.94/x
3. Step 3: Cross multiply
   39,639.38x = 89,742.94 × 89,742.94
4. Step 4: Simplify right side
   39,639.38x = 8,053,794,831.13
5. Step 5: Solve for x
   x = 8,053,794,831.13/39,639.38
6. Step 6: Final answer
   x = 203,176.64