Finding the Third Proportional to 109,499 and 121,019

Step by Step Solution

1. Step 1: Write the proportion equation
   109,499 : 121,019 = 121,019 : x
2. Step 2: Convert to fraction form
   109,499/121,019 = 121,019/x
3. Step 3: Cross multiply
   109,499x = 121,019 × 121,019
4. Step 4: Simplify right side
   109,499x = 14,645,598,361
5. Step 5: Solve for x
   x = 14,645,598,361/109,499
6. Step 6: Final answer
   x = 133,750.98