Finding the Third Proportional to 111,940 and 230,449

Step by Step Solution

1. Step 1: Write the proportion equation
   111,940 : 230,449 = 230,449 : x
2. Step 2: Convert to fraction form
   111,940/230,449 = 230,449/x
3. Step 3: Cross multiply
   111,940x = 230,449 × 230,449
4. Step 4: Simplify right side
   111,940x = 53,106,741,601
5. Step 5: Solve for x
   x = 53,106,741,601/111,940
6. Step 6: Final answer
   x = 474,421.49