Finding the Third Proportional to 90,436.50 and 196,441.88

Step by Step Solution

1. Step 1: Write the proportion equation
   90,436.50 : 196,441.88 = 196,441.88 : x
2. Step 2: Convert to fraction form
   90,436.50/196,441.88 = 196,441.88/x
3. Step 3: Cross multiply
   90,436.50x = 196,441.88 × 196,441.88
4. Step 4: Simplify right side
   90,436.50x = 38,589,410,253.52
5. Step 5: Solve for x
   x = 38,589,410,253.52/90,436.50
6. Step 6: Final answer
   x = 426,701.72