Finding the Third Proportional to 674.89 and 939.73

Step by Step Solution

1. Step 1: Write the proportion equation
   674.89 : 939.73 = 939.73 : x
2. Step 2: Convert to fraction form
   674.89/939.73 = 939.73/x
3. Step 3: Cross multiply
   674.89x = 939.73 × 939.73
4. Step 4: Simplify right side
   674.89x = 883,086.01
5. Step 5: Solve for x
   x = 883,086.01/674.89
6. Step 6: Final answer
   x = 1,308.48