Finding the Third Proportional to 457.31 and 994.31

Step by Step Solution

1. Step 1: Write the proportion equation
   457.31 : 994.31 = 994.31 : x
2. Step 2: Convert to fraction form
   457.31/994.31 = 994.31/x
3. Step 3: Cross multiply
   457.31x = 994.31 × 994.31
4. Step 4: Simplify right side
   457.31x = 988,657.35
5. Step 5: Solve for x
   x = 988,657.35/457.31
6. Step 6: Final answer
   x = 2,161.89