Finding the Third Proportional to 1,442.81 and 3,212.16

Step by Step Solution

1. Step 1: Write the proportion equation
   1,442.81 : 3,212.16 = 3,212.16 : x
2. Step 2: Convert to fraction form
   1,442.81/3,212.16 = 3,212.16/x
3. Step 3: Cross multiply
   1,442.81x = 3,212.16 × 3,212.16
4. Step 4: Simplify right side
   1,442.81x = 10,317,947.77
5. Step 5: Solve for x
   x = 10,317,947.77/1,442.81
6. Step 6: Final answer
   x = 7,151.27