Finding the Third Proportional to 89,494.50 and 196,485

Step by Step Solution

1. Step 1: Write the proportion equation
   89,494.50 : 196,485 = 196,485 : x
2. Step 2: Convert to fraction form
   89,494.50/196,485 = 196,485/x
3. Step 3: Cross multiply
   89,494.50x = 196,485 × 196,485
4. Step 4: Simplify right side
   89,494.50x = 38,606,355,225
5. Step 5: Solve for x
   x = 38,606,355,225/89,494.50
6. Step 6: Final answer
   x = 431,382.43