Finding the Third Proportional to 1,984.29 and 3,139.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,984.29 : 3,139.38 = 3,139.38 : x
2. Step 2: Convert to fraction form
   1,984.29/3,139.38 = 3,139.38/x
3. Step 3: Cross multiply
   1,984.29x = 3,139.38 × 3,139.38
4. Step 4: Simplify right side
   1,984.29x = 9,855,724.44
5. Step 5: Solve for x
   x = 9,855,724.44/1,984.29
6. Step 6: Final answer
   x = 4,966.88