Finding the Third Proportional to 2,196.28 and 3,451.78

Step by Step Solution

1. Step 1: Write the proportion equation
   2,196.28 : 3,451.78 = 3,451.78 : x
2. Step 2: Convert to fraction form
   2,196.28/3,451.78 = 3,451.78/x
3. Step 3: Cross multiply
   2,196.28x = 3,451.78 × 3,451.78
4. Step 4: Simplify right side
   2,196.28x = 11,914,793.80
5. Step 5: Solve for x
   x = 11,914,793.80/2,196.28
6. Step 6: Final answer
   x = 5,424.99