Finding the Third Proportional to 91,396 and 200,612

Step by Step Solution

1. Step 1: Write the proportion equation
   91,396 : 200,612 = 200,612 : x
2. Step 2: Convert to fraction form
   91,396/200,612 = 200,612/x
3. Step 3: Cross multiply
   91,396x = 200,612 × 200,612
4. Step 4: Simplify right side
   91,396x = 40,245,174,544
5. Step 5: Solve for x
   x = 40,245,174,544/91,396
6. Step 6: Final answer
   x = 440,338.47