Finding the Third Proportional to 111,469 and 168,392

Step by Step Solution

1. Step 1: Write the proportion equation
   111,469 : 168,392 = 168,392 : x
2. Step 2: Convert to fraction form
   111,469/168,392 = 168,392/x
3. Step 3: Cross multiply
   111,469x = 168,392 × 168,392
4. Step 4: Simplify right side
   111,469x = 28,355,865,664
5. Step 5: Solve for x
   x = 28,355,865,664/111,469
6. Step 6: Final answer
   x = 254,383.42