Finding the Third Proportional to 89,671.50 and 196,839

Step by Step Solution

1. Step 1: Write the proportion equation
   89,671.50 : 196,839 = 196,839 : x
2. Step 2: Convert to fraction form
   89,671.50/196,839 = 196,839/x
3. Step 3: Cross multiply
   89,671.50x = 196,839 × 196,839
4. Step 4: Simplify right side
   89,671.50x = 38,745,591,921
5. Step 5: Solve for x
   x = 38,745,591,921/89,671.50
6. Step 6: Final answer
   x = 432,083.68