Finding the Third Proportional to 313,139.25 and 697,995

Step by Step Solution

1. Step 1: Write the proportion equation
   313,139.25 : 697,995 = 697,995 : x
2. Step 2: Convert to fraction form
   313,139.25/697,995 = 697,995/x
3. Step 3: Cross multiply
   313,139.25x = 697,995 × 697,995
4. Step 4: Simplify right side
   313,139.25x = 487,197,020,025
5. Step 5: Solve for x
   x = 487,197,020,025/313,139.25
6. Step 6: Final answer
   x = 1,555,847.82