Finding the Third Proportional to 2,890 and 3,942

Step by Step Solution

1. Step 1: Write the proportion equation
   2,890 : 3,942 = 3,942 : x
2. Step 2: Convert to fraction form
   2,890/3,942 = 3,942/x
3. Step 3: Cross multiply
   2,890x = 3,942 × 3,942
4. Step 4: Simplify right side
   2,890x = 15,539,364
5. Step 5: Solve for x
   x = 15,539,364/2,890
6. Step 6: Final answer
   x = 5,376.94