Finding the Third Proportional to 90,581.50 and 196,771.25

Step by Step Solution

1. Step 1: Write the proportion equation
   90,581.50 : 196,771.25 = 196,771.25 : x
2. Step 2: Convert to fraction form
   90,581.50/196,771.25 = 196,771.25/x
3. Step 3: Cross multiply
   90,581.50x = 196,771.25 × 196,771.25
4. Step 4: Simplify right side
   90,581.50x = 38,718,924,826.56
5. Step 5: Solve for x
   x = 38,718,924,826.56/90,581.50
6. Step 6: Final answer
   x = 427,448.48