Finding the Third Proportional to 90,679 and 140,882

Step by Step Solution

1. Step 1: Write the proportion equation
   90,679 : 140,882 = 140,882 : x
2. Step 2: Convert to fraction form
   90,679/140,882 = 140,882/x
3. Step 3: Cross multiply
   90,679x = 140,882 × 140,882
4. Step 4: Simplify right side
   90,679x = 19,847,737,924
5. Step 5: Solve for x
   x = 19,847,737,924/90,679
6. Step 6: Final answer
   x = 218,879.10