Finding the Third Proportional to 990.38 and 1,414.69

Step by Step Solution

1. Step 1: Write the proportion equation
   990.38 : 1,414.69 = 1,414.69 : x
2. Step 2: Convert to fraction form
   990.38/1,414.69 = 1,414.69/x
3. Step 3: Cross multiply
   990.38x = 1,414.69 × 1,414.69
4. Step 4: Simplify right side
   990.38x = 2,001,340.72
5. Step 5: Solve for x
   x = 2,001,340.72/990.38
6. Step 6: Final answer
   x = 2,020.79