Finding the Third Proportional to 48,144 and 72,216

Step by Step Solution

1. Step 1: Write the proportion equation
   48,144 : 72,216 = 72,216 : x
2. Step 2: Convert to fraction form
   48,144/72,216 = 72,216/x
3. Step 3: Cross multiply
   48,144x = 72,216 × 72,216
4. Step 4: Simplify right side
   48,144x = 5,215,150,656
5. Step 5: Solve for x
   x = 5,215,150,656/48,144
6. Step 6: Final answer
   x = 108,324