Finding the Third Proportional to 40,354.88 and 79,680.38

Step by Step Solution

1. Step 1: Write the proportion equation
   40,354.88 : 79,680.38 = 79,680.38 : x
2. Step 2: Convert to fraction form
   40,354.88/79,680.38 = 79,680.38/x
3. Step 3: Cross multiply
   40,354.88x = 79,680.38 × 79,680.38
4. Step 4: Simplify right side
   40,354.88x = 6,348,962,160.14
5. Step 5: Solve for x
   x = 6,348,962,160.14/40,354.88
6. Step 6: Final answer
   x = 157,328.26