Finding the Third Proportional to 111,272 and 231,748

Step by Step Solution

1. Step 1: Write the proportion equation
   111,272 : 231,748 = 231,748 : x
2. Step 2: Convert to fraction form
   111,272/231,748 = 231,748/x
3. Step 3: Cross multiply
   111,272x = 231,748 × 231,748
4. Step 4: Simplify right side
   111,272x = 53,707,135,504
5. Step 5: Solve for x
   x = 53,707,135,504/111,272
6. Step 6: Final answer
   x = 482,665.32