Finding the Third Proportional to 111,672 and 156,192

Step by Step Solution

1. Step 1: Write the proportion equation
   111,672 : 156,192 = 156,192 : x
2. Step 2: Convert to fraction form
   111,672/156,192 = 156,192/x
3. Step 3: Cross multiply
   111,672x = 156,192 × 156,192
4. Step 4: Simplify right side
   111,672x = 24,395,940,864
5. Step 5: Solve for x
   x = 24,395,940,864/111,672
6. Step 6: Final answer
   x = 218,460.68