Finding the Third Proportional to 111,230 and 239,960

Step by Step Solution

1. Step 1: Write the proportion equation
   111,230 : 239,960 = 239,960 : x
2. Step 2: Convert to fraction form
   111,230/239,960 = 239,960/x
3. Step 3: Cross multiply
   111,230x = 239,960 × 239,960
4. Step 4: Simplify right side
   111,230x = 57,580,801,600
5. Step 5: Solve for x
   x = 57,580,801,600/111,230
6. Step 6: Final answer
   x = 517,673.30