Finding the Third Proportional to 2,205.56 and 3,439.55

Step by Step Solution

1. Step 1: Write the proportion equation
   2,205.56 : 3,439.55 = 3,439.55 : x
2. Step 2: Convert to fraction form
   2,205.56/3,439.55 = 3,439.55/x
3. Step 3: Cross multiply
   2,205.56x = 3,439.55 × 3,439.55
4. Step 4: Simplify right side
   2,205.56x = 11,830,482.71
5. Step 5: Solve for x
   x = 11,830,482.71/2,205.56
6. Step 6: Final answer
   x = 5,363.93