Finding the Third Proportional to 326.09 and 667.17

Step by Step Solution

1. Step 1: Write the proportion equation
   326.09 : 667.17 = 667.17 : x
2. Step 2: Convert to fraction form
   326.09/667.17 = 667.17/x
3. Step 3: Cross multiply
   326.09x = 667.17 × 667.17
4. Step 4: Simplify right side
   326.09x = 445,118.31
5. Step 5: Solve for x
   x = 445,118.31/326.09
6. Step 6: Final answer
   x = 1,365.03