Finding the Third Proportional to 3,949.31 and 5,299.59

Step by Step Solution

1. Step 1: Write the proportion equation
   3,949.31 : 5,299.59 = 5,299.59 : x
2. Step 2: Convert to fraction form
   3,949.31/5,299.59 = 5,299.59/x
3. Step 3: Cross multiply
   3,949.31x = 5,299.59 × 5,299.59
4. Step 4: Simplify right side
   3,949.31x = 28,085,693.92
5. Step 5: Solve for x
   x = 28,085,693.92/3,949.31
6. Step 6: Final answer
   x = 7,111.54