Finding the Third Proportional to 90,432 and 196,432

Step by Step Solution

1. Step 1: Write the proportion equation
   90,432 : 196,432 = 196,432 : x
2. Step 2: Convert to fraction form
   90,432/196,432 = 196,432/x
3. Step 3: Cross multiply
   90,432x = 196,432 × 196,432
4. Step 4: Simplify right side
   90,432x = 38,585,530,624
5. Step 5: Solve for x
   x = 38,585,530,624/90,432
6. Step 6: Final answer
   x = 426,680.05