Finding the Third Proportional to 2,196.28 and 3,489.94

Step by Step Solution

1. Step 1: Write the proportion equation
   2,196.28 : 3,489.94 = 3,489.94 : x
2. Step 2: Convert to fraction form
   2,196.28/3,489.94 = 3,489.94/x
3. Step 3: Cross multiply
   2,196.28x = 3,489.94 × 3,489.94
4. Step 4: Simplify right side
   2,196.28x = 12,179,663.75
5. Step 5: Solve for x
   x = 12,179,663.75/2,196.28
6. Step 6: Final answer
   x = 5,545.58