Finding the Third Proportional to 325,976 and 672,256

Step by Step Solution

1. Step 1: Write the proportion equation
   325,976 : 672,256 = 672,256 : x
2. Step 2: Convert to fraction form
   325,976/672,256 = 672,256/x
3. Step 3: Cross multiply
   325,976x = 672,256 × 672,256
4. Step 4: Simplify right side
   325,976x = 451,928,129,536
5. Step 5: Solve for x
   x = 451,928,129,536/325,976
6. Step 6: Final answer
   x = 1,386,384.67