Finding the Third Proportional to 328.31 and 670.03

Step by Step Solution

1. Step 1: Write the proportion equation
   328.31 : 670.03 = 670.03 : x
2. Step 2: Convert to fraction form
   328.31/670.03 = 670.03/x
3. Step 3: Cross multiply
   328.31x = 670.03 × 670.03
4. Step 4: Simplify right side
   328.31x = 448,941.88
5. Step 5: Solve for x
   x = 448,941.88/328.31
6. Step 6: Final answer
   x = 1,367.42