Finding the Third Proportional to 3,113 and 4,171.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,113 : 4,171.50 = 4,171.50 : x
2. Step 2: Convert to fraction form
   3,113/4,171.50 = 4,171.50/x
3. Step 3: Cross multiply
   3,113x = 4,171.50 × 4,171.50
4. Step 4: Simplify right side
   3,113x = 17,401,412.25
5. Step 5: Solve for x
   x = 17,401,412.25/3,113
6. Step 6: Final answer
   x = 5,589.92