Finding the Third Proportional to 3,902 and 5,200

Step by Step Solution

1. Step 1: Write the proportion equation
   3,902 : 5,200 = 5,200 : x
2. Step 2: Convert to fraction form
   3,902/5,200 = 5,200/x
3. Step 3: Cross multiply
   3,902x = 5,200 × 5,200
4. Step 4: Simplify right side
   3,902x = 27,040,000
5. Step 5: Solve for x
   x = 27,040,000/3,902
6. Step 6: Final answer
   x = 6,929.78