Finding the Third Proportional to 1,296 and 3,168

Step by Step Solution

1. Step 1: Write the proportion equation
   1,296 : 3,168 = 3,168 : x
2. Step 2: Convert to fraction form
   1,296/3,168 = 3,168/x
3. Step 3: Cross multiply
   1,296x = 3,168 × 3,168
4. Step 4: Simplify right side
   1,296x = 10,036,224
5. Step 5: Solve for x
   x = 10,036,224/1,296
6. Step 6: Final answer
   x = 7,744