Finding the Third Proportional to 3,555 and 5,530.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,555 : 5,530.50 = 5,530.50 : x
2. Step 2: Convert to fraction form
   3,555/5,530.50 = 5,530.50/x
3. Step 3: Cross multiply
   3,555x = 5,530.50 × 5,530.50
4. Step 4: Simplify right side
   3,555x = 30,586,430.25
5. Step 5: Solve for x
   x = 30,586,430.25/3,555
6. Step 6: Final answer
   x = 8,603.78