Finding the Third Proportional to 90,518.50 and 196,589

Step by Step Solution

1. Step 1: Write the proportion equation
   90,518.50 : 196,589 = 196,589 : x
2. Step 2: Convert to fraction form
   90,518.50/196,589 = 196,589/x
3. Step 3: Cross multiply
   90,518.50x = 196,589 × 196,589
4. Step 4: Simplify right side
   90,518.50x = 38,647,234,921
5. Step 5: Solve for x
   x = 38,647,234,921/90,518.50
6. Step 6: Final answer
   x = 426,953.99