Finding the Third Proportional to 3,543.56 and 7,724.81

Step by Step Solution

1. Step 1: Write the proportion equation
   3,543.56 : 7,724.81 = 7,724.81 : x
2. Step 2: Convert to fraction form
   3,543.56/7,724.81 = 7,724.81/x
3. Step 3: Cross multiply
   3,543.56x = 7,724.81 × 7,724.81
4. Step 4: Simplify right side
   3,543.56x = 59,672,728.16
5. Step 5: Solve for x
   x = 59,672,728.16/3,543.56
6. Step 6: Final answer
   x = 16,839.76