Finding the Third Proportional to 1,442.81 and 2,154.09

Step by Step Solution

1. Step 1: Write the proportion equation
   1,442.81 : 2,154.09 = 2,154.09 : x
2. Step 2: Convert to fraction form
   1,442.81/2,154.09 = 2,154.09/x
3. Step 3: Cross multiply
   1,442.81x = 2,154.09 × 2,154.09
4. Step 4: Simplify right side
   1,442.81x = 4,640,119.88
5. Step 5: Solve for x
   x = 4,640,119.88/1,442.81
6. Step 6: Final answer
   x = 3,216.02