Finding the Third Proportional to 3,139.88 and 5,347.69

Step by Step Solution

1. Step 1: Write the proportion equation
   3,139.88 : 5,347.69 = 5,347.69 : x
2. Step 2: Convert to fraction form
   3,139.88/5,347.69 = 5,347.69/x
3. Step 3: Cross multiply
   3,139.88x = 5,347.69 × 5,347.69
4. Step 4: Simplify right side
   3,139.88x = 28,597,761.60
5. Step 5: Solve for x
   x = 28,597,761.60/3,139.88
6. Step 6: Final answer
   x = 9,107.93