Finding the Third Proportional to 908.30 and 1,396.83

Step by Step Solution

1. Step 1: Write the proportion equation
   908.30 : 1,396.83 = 1,396.83 : x
2. Step 2: Convert to fraction form
   908.30/1,396.83 = 1,396.83/x
3. Step 3: Cross multiply
   908.30x = 1,396.83 × 1,396.83
4. Step 4: Simplify right side
   908.30x = 1,951,128.81
5. Step 5: Solve for x
   x = 1,951,128.81/908.30
6. Step 6: Final answer
   x = 2,148.12