Finding the Third Proportional to 677,597.63 and 990,940.50

Step by Step Solution

1. Step 1: Write the proportion equation
   677,597.63 : 990,940.50 = 990,940.50 : x
2. Step 2: Convert to fraction form
   677,597.63/990,940.50 = 990,940.50/x
3. Step 3: Cross multiply
   677,597.63x = 990,940.50 × 990,940.50
4. Step 4: Simplify right side
   677,597.63x = 981,963,074,540.25
5. Step 5: Solve for x
   x = 981,963,074,540.25/677,597.63
6. Step 6: Final answer
   x = 1,449,183.17