Finding the Third Proportional to 454,986 and 990,645.75

Step by Step Solution

1. Step 1: Write the proportion equation
   454,986 : 990,645.75 = 990,645.75 : x
2. Step 2: Convert to fraction form
   454,986/990,645.75 = 990,645.75/x
3. Step 3: Cross multiply
   454,986x = 990,645.75 × 990,645.75
4. Step 4: Simplify right side
   454,986x = 981,379,001,993.06
5. Step 5: Solve for x
   x = 981,379,001,993.06/454,986
6. Step 6: Final answer
   x = 2,156,943.29