Finding the Third Proportional to 90,288 and 195,642

Step by Step Solution

1. Step 1: Write the proportion equation
   90,288 : 195,642 = 195,642 : x
2. Step 2: Convert to fraction form
   90,288/195,642 = 195,642/x
3. Step 3: Cross multiply
   90,288x = 195,642 × 195,642
4. Step 4: Simplify right side
   90,288x = 38,275,792,164
5. Step 5: Solve for x
   x = 38,275,792,164/90,288
6. Step 6: Final answer
   x = 423,930.00