Finding the Third Proportional to 90,396 and 192,456

Step by Step Solution

1. Step 1: Write the proportion equation
   90,396 : 192,456 = 192,456 : x
2. Step 2: Convert to fraction form
   90,396/192,456 = 192,456/x
3. Step 3: Cross multiply
   90,396x = 192,456 × 192,456
4. Step 4: Simplify right side
   90,396x = 37,039,311,936
5. Step 5: Solve for x
   x = 37,039,311,936/90,396
6. Step 6: Final answer
   x = 409,745.03