Finding the Third Proportional to 677,559.94 and 990,847.69

Step by Step Solution

1. Step 1: Write the proportion equation
   677,559.94 : 990,847.69 = 990,847.69 : x
2. Step 2: Convert to fraction form
   677,559.94/990,847.69 = 990,847.69/x
3. Step 3: Cross multiply
   677,559.94x = 990,847.69 × 990,847.69
4. Step 4: Simplify right side
   677,559.94x = 981,779,139,824.10
5. Step 5: Solve for x
   x = 981,779,139,824.10/677,559.94
6. Step 6: Final answer
   x = 1,448,992.31