Finding the Third Proportional to 111,456 and 168,372

Step by Step Solution

1. Step 1: Write the proportion equation
   111,456 : 168,372 = 168,372 : x
2. Step 2: Convert to fraction form
   111,456/168,372 = 168,372/x
3. Step 3: Cross multiply
   111,456x = 168,372 × 168,372
4. Step 4: Simplify right side
   111,456x = 28,349,130,384
5. Step 5: Solve for x
   x = 28,349,130,384/111,456
6. Step 6: Final answer
   x = 254,352.66