Finding the Third Proportional to 3,558 and 5,497.31

Step by Step Solution

1. Step 1: Write the proportion equation
   3,558 : 5,497.31 = 5,497.31 : x
2. Step 2: Convert to fraction form
   3,558/5,497.31 = 5,497.31/x
3. Step 3: Cross multiply
   3,558x = 5,497.31 × 5,497.31
4. Step 4: Simplify right side
   3,558x = 30,220,444.72
5. Step 5: Solve for x
   x = 30,220,444.72/3,558
6. Step 6: Final answer
   x = 8,493.66