Finding the Third Proportional to 111,720 and 234,930

Step by Step Solution

1. Step 1: Write the proportion equation
   111,720 : 234,930 = 234,930 : x
2. Step 2: Convert to fraction form
   111,720/234,930 = 234,930/x
3. Step 3: Cross multiply
   111,720x = 234,930 × 234,930
4. Step 4: Simplify right side
   111,720x = 55,192,104,900
5. Step 5: Solve for x
   x = 55,192,104,900/111,720
6. Step 6: Final answer
   x = 494,021.71