Finding the Third Proportional to 3,928 and 5,870

Step by Step Solution

1. Step 1: Write the proportion equation
   3,928 : 5,870 = 5,870 : x
2. Step 2: Convert to fraction form
   3,928/5,870 = 5,870/x
3. Step 3: Cross multiply
   3,928x = 5,870 × 5,870
4. Step 4: Simplify right side
   3,928x = 34,456,900
5. Step 5: Solve for x
   x = 34,456,900/3,928
6. Step 6: Final answer
   x = 8,772.12