Finding the Third Proportional to 435.30 and 674.51

Step by Step Solution

1. Step 1: Write the proportion equation
   435.30 : 674.51 = 674.51 : x
2. Step 2: Convert to fraction form
   435.30/674.51 = 674.51/x
3. Step 3: Cross multiply
   435.30x = 674.51 × 674.51
4. Step 4: Simplify right side
   435.30x = 454,960.79
5. Step 5: Solve for x
   x = 454,960.79/435.30
6. Step 6: Final answer
   x = 1,045.15