Finding the Third Proportional to 3,139.50 and 5,808.75

Step by Step Solution

1. Step 1: Write the proportion equation
   3,139.50 : 5,808.75 = 5,808.75 : x
2. Step 2: Convert to fraction form
   3,139.50/5,808.75 = 5,808.75/x
3. Step 3: Cross multiply
   3,139.50x = 5,808.75 × 5,808.75
4. Step 4: Simplify right side
   3,139.50x = 33,741,576.56
5. Step 5: Solve for x
   x = 33,741,576.56/3,139.50
6. Step 6: Final answer
   x = 10,747.44