Finding the Third Proportional to 454,932 and 990,540

Step by Step Solution

1. Step 1: Write the proportion equation
   454,932 : 990,540 = 990,540 : x
2. Step 2: Convert to fraction form
   454,932/990,540 = 990,540/x
3. Step 3: Cross multiply
   454,932x = 990,540 × 990,540
4. Step 4: Simplify right side
   454,932x = 981,169,491,600
5. Step 5: Solve for x
   x = 981,169,491,600/454,932
6. Step 6: Final answer
   x = 2,156,738.79