Finding the Third Proportional to 40,878.11 and 87,666.52

Step by Step Solution

1. Step 1: Write the proportion equation
   40,878.11 : 87,666.52 = 87,666.52 : x
2. Step 2: Convert to fraction form
   40,878.11/87,666.52 = 87,666.52/x
3. Step 3: Cross multiply
   40,878.11x = 87,666.52 × 87,666.52
4. Step 4: Simplify right side
   40,878.11x = 7,685,418,989.17
5. Step 5: Solve for x
   x = 7,685,418,989.17/40,878.11
6. Step 6: Final answer
   x = 188,008.20