Finding the Third Proportional to 91,128.75 and 196,227

Step by Step Solution

1. Step 1: Write the proportion equation
   91,128.75 : 196,227 = 196,227 : x
2. Step 2: Convert to fraction form
   91,128.75/196,227 = 196,227/x
3. Step 3: Cross multiply
   91,128.75x = 196,227 × 196,227
4. Step 4: Simplify right side
   91,128.75x = 38,505,035,529
5. Step 5: Solve for x
   x = 38,505,035,529/91,128.75
6. Step 6: Final answer
   x = 422,534.44