Finding the Third Proportional to 111,072 and 239,884

Step by Step Solution

1. Step 1: Write the proportion equation
   111,072 : 239,884 = 239,884 : x
2. Step 2: Convert to fraction form
   111,072/239,884 = 239,884/x
3. Step 3: Cross multiply
   111,072x = 239,884 × 239,884
4. Step 4: Simplify right side
   111,072x = 57,544,333,456
5. Step 5: Solve for x
   x = 57,544,333,456/111,072
6. Step 6: Final answer
   x = 518,081.37