Finding the Third Proportional to 326,016 and 672,984

Step by Step Solution

1. Step 1: Write the proportion equation
   326,016 : 672,984 = 672,984 : x
2. Step 2: Convert to fraction form
   326,016/672,984 = 672,984/x
3. Step 3: Cross multiply
   326,016x = 672,984 × 672,984
4. Step 4: Simplify right side
   326,016x = 452,907,464,256
5. Step 5: Solve for x
   x = 452,907,464,256/326,016
6. Step 6: Final answer
   x = 1,389,218.52