Finding the Third Proportional to 123,672 and 187,872

Step by Step Solution

1. Step 1: Write the proportion equation
   123,672 : 187,872 = 187,872 : x
2. Step 2: Convert to fraction form
   123,672/187,872 = 187,872/x
3. Step 3: Cross multiply
   123,672x = 187,872 × 187,872
4. Step 4: Simplify right side
   123,672x = 35,295,888,384
5. Step 5: Solve for x
   x = 35,295,888,384/123,672
6. Step 6: Final answer
   x = 285,399.19