Finding the Third Proportional to 676.55 and 1,330.45

Step by Step Solution

1. Step 1: Write the proportion equation
   676.55 : 1,330.45 = 1,330.45 : x
2. Step 2: Convert to fraction form
   676.55/1,330.45 = 1,330.45/x
3. Step 3: Cross multiply
   676.55x = 1,330.45 × 1,330.45
4. Step 4: Simplify right side
   676.55x = 1,770,105.52
5. Step 5: Solve for x
   x = 1,770,105.52/676.55
6. Step 6: Final answer
   x = 2,616.38