Finding the Third Proportional to 8,648 and 13,512

Step by Step Solution

1. Step 1: Write the proportion equation
   8,648 : 13,512 = 13,512 : x
2. Step 2: Convert to fraction form
   8,648/13,512 = 13,512/x
3. Step 3: Cross multiply
   8,648x = 13,512 × 13,512
4. Step 4: Simplify right side
   8,648x = 182,574,144
5. Step 5: Solve for x
   x = 182,574,144/8,648
6. Step 6: Final answer
   x = 21,111.72