Finding the Third Proportional to 90,110 and 129,799

Step by Step Solution

1. Step 1: Write the proportion equation
   90,110 : 129,799 = 129,799 : x
2. Step 2: Convert to fraction form
   90,110/129,799 = 129,799/x
3. Step 3: Cross multiply
   90,110x = 129,799 × 129,799
4. Step 4: Simplify right side
   90,110x = 16,847,780,401
5. Step 5: Solve for x
   x = 16,847,780,401/90,110
6. Step 6: Final answer
   x = 186,969.04