Finding the Third Proportional to 42,786.75 and 66,512.71

Step by Step Solution

1. Step 1: Write the proportion equation
   42,786.75 : 66,512.71 = 66,512.71 : x
2. Step 2: Convert to fraction form
   42,786.75/66,512.71 = 66,512.71/x
3. Step 3: Cross multiply
   42,786.75x = 66,512.71 × 66,512.71
4. Step 4: Simplify right side
   42,786.75x = 4,423,940,196.62
5. Step 5: Solve for x
   x = 4,423,940,196.62/42,786.75
6. Step 6: Final answer
   x = 103,395.10