Finding the Third Proportional to 3,891.56 and 5,559.94

Step by Step Solution

1. Step 1: Write the proportion equation
   3,891.56 : 5,559.94 = 5,559.94 : x
2. Step 2: Convert to fraction form
   3,891.56/5,559.94 = 5,559.94/x
3. Step 3: Cross multiply
   3,891.56x = 5,559.94 × 5,559.94
4. Step 4: Simplify right side
   3,891.56x = 30,912,905.00
5. Step 5: Solve for x
   x = 30,912,905.00/3,891.56
6. Step 6: Final answer
   x = 7,943.57