Finding the Third Proportional to 111,786 and 168,728

Step by Step Solution

1. Step 1: Write the proportion equation
   111,786 : 168,728 = 168,728 : x
2. Step 2: Convert to fraction form
   111,786/168,728 = 168,728/x
3. Step 3: Cross multiply
   111,786x = 168,728 × 168,728
4. Step 4: Simplify right side
   111,786x = 28,469,137,984
5. Step 5: Solve for x
   x = 28,469,137,984/111,786
6. Step 6: Final answer
   x = 254,675.34