Finding the Third Proportional to 89,966 and 192,390

Step by Step Solution

1. Step 1: Write the proportion equation
   89,966 : 192,390 = 192,390 : x
2. Step 2: Convert to fraction form
   89,966/192,390 = 192,390/x
3. Step 3: Cross multiply
   89,966x = 192,390 × 192,390
4. Step 4: Simplify right side
   89,966x = 37,013,912,100
5. Step 5: Solve for x
   x = 37,013,912,100/89,966
6. Step 6: Final answer
   x = 411,421.12