Finding the Third Proportional to 685.03 and 934.31

Step by Step Solution

1. Step 1: Write the proportion equation
   685.03 : 934.31 = 934.31 : x
2. Step 2: Convert to fraction form
   685.03/934.31 = 934.31/x
3. Step 3: Cross multiply
   685.03x = 934.31 × 934.31
4. Step 4: Simplify right side
   685.03x = 872,939.85
5. Step 5: Solve for x
   x = 872,939.85/685.03
6. Step 6: Final answer
   x = 1,274.31