Finding the Third Proportional to 111,776 and 168,440

Step by Step Solution

1. Step 1: Write the proportion equation
   111,776 : 168,440 = 168,440 : x
2. Step 2: Convert to fraction form
   111,776/168,440 = 168,440/x
3. Step 3: Cross multiply
   111,776x = 168,440 × 168,440
4. Step 4: Simplify right side
   111,776x = 28,372,033,600
5. Step 5: Solve for x
   x = 28,372,033,600/111,776
6. Step 6: Final answer
   x = 253,829.39