Finding the Third Proportional to 72,192 and 108,288

Step by Step Solution

1. Step 1: Write the proportion equation
   72,192 : 108,288 = 108,288 : x
2. Step 2: Convert to fraction form
   72,192/108,288 = 108,288/x
3. Step 3: Cross multiply
   72,192x = 108,288 × 108,288
4. Step 4: Simplify right side
   72,192x = 11,726,290,944
5. Step 5: Solve for x
   x = 11,726,290,944/72,192
6. Step 6: Final answer
   x = 162,432