Finding the Third Proportional to 310,826 and 677,002

Step by Step Solution

1. Step 1: Write the proportion equation
   310,826 : 677,002 = 677,002 : x
2. Step 2: Convert to fraction form
   310,826/677,002 = 677,002/x
3. Step 3: Cross multiply
   310,826x = 677,002 × 677,002
4. Step 4: Simplify right side
   310,826x = 458,331,708,004
5. Step 5: Solve for x
   x = 458,331,708,004/310,826
6. Step 6: Final answer
   x = 1,474,560.39