Finding the Third Proportional to 1,353.38 and 2,143.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,353.38 : 2,143.69 = 2,143.69 : x
2. Step 2: Convert to fraction form
   1,353.38/2,143.69 = 2,143.69/x
3. Step 3: Cross multiply
   1,353.38x = 2,143.69 × 2,143.69
4. Step 4: Simplify right side
   1,353.38x = 4,595,396.10
5. Step 5: Solve for x
   x = 4,595,396.10/1,353.38
6. Step 6: Final answer
   x = 3,395.51