Finding the Third Proportional to 87,864 and 192,456

Step by Step Solution

1. Step 1: Write the proportion equation
   87,864 : 192,456 = 192,456 : x
2. Step 2: Convert to fraction form
   87,864/192,456 = 192,456/x
3. Step 3: Cross multiply
   87,864x = 192,456 × 192,456
4. Step 4: Simplify right side
   87,864x = 37,039,311,936
5. Step 5: Solve for x
   x = 37,039,311,936/87,864
6. Step 6: Final answer
   x = 421,552.76