Finding the Third Proportional to 1,396.13 and 2,112.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,396.13 : 2,112.38 = 2,112.38 : x
2. Step 2: Convert to fraction form
   1,396.13/2,112.38 = 2,112.38/x
3. Step 3: Cross multiply
   1,396.13x = 2,112.38 × 2,112.38
4. Step 4: Simplify right side
   1,396.13x = 4,462,128.14
5. Step 5: Solve for x
   x = 4,462,128.14/1,396.13
6. Step 6: Final answer
   x = 3,196.08