Finding the Third Proportional to 3,428.06 and 5,179.69

Step by Step Solution

1. Step 1: Write the proportion equation
   3,428.06 : 5,179.69 = 5,179.69 : x
2. Step 2: Convert to fraction form
   3,428.06/5,179.69 = 5,179.69/x
3. Step 3: Cross multiply
   3,428.06x = 5,179.69 × 5,179.69
4. Step 4: Simplify right side
   3,428.06x = 26,829,162.60
5. Step 5: Solve for x
   x = 26,829,162.60/3,428.06
6. Step 6: Final answer
   x = 7,826.33