Finding the Third Proportional to 674.72 and 1,451.25

Step by Step Solution

1. Step 1: Write the proportion equation
   674.72 : 1,451.25 = 1,451.25 : x
2. Step 2: Convert to fraction form
   674.72/1,451.25 = 1,451.25/x
3. Step 3: Cross multiply
   674.72x = 1,451.25 × 1,451.25
4. Step 4: Simplify right side
   674.72x = 2,106,126.56
5. Step 5: Solve for x
   x = 2,106,126.56/674.72
6. Step 6: Final answer
   x = 3,121.49