Finding the Third Proportional to 677,607 and 990,976.50

Step by Step Solution

1. Step 1: Write the proportion equation
   677,607 : 990,976.50 = 990,976.50 : x
2. Step 2: Convert to fraction form
   677,607/990,976.50 = 990,976.50/x
3. Step 3: Cross multiply
   677,607x = 990,976.50 × 990,976.50
4. Step 4: Simplify right side
   677,607x = 982,034,423,552.25
5. Step 5: Solve for x
   x = 982,034,423,552.25/677,607
6. Step 6: Final answer
   x = 1,449,268.42