Finding the Third Proportional to 91,128.94 and 196,227.56

Step by Step Solution

1. Step 1: Write the proportion equation
   91,128.94 : 196,227.56 = 196,227.56 : x
2. Step 2: Convert to fraction form
   91,128.94/196,227.56 = 196,227.56/x
3. Step 3: Cross multiply
   91,128.94x = 196,227.56 × 196,227.56
4. Step 4: Simplify right side
   91,128.94x = 38,505,256,284.69
5. Step 5: Solve for x
   x = 38,505,256,284.69/91,128.94
6. Step 6: Final answer
   x = 422,536.00