Finding the Third Proportional to 90,216 and 195,012

Step by Step Solution

1. Step 1: Write the proportion equation
   90,216 : 195,012 = 195,012 : x
2. Step 2: Convert to fraction form
   90,216/195,012 = 195,012/x
3. Step 3: Cross multiply
   90,216x = 195,012 × 195,012
4. Step 4: Simplify right side
   90,216x = 38,029,680,144
5. Step 5: Solve for x
   x = 38,029,680,144/90,216
6. Step 6: Final answer
   x = 421,540.30