Finding the Third Proportional to 91,576 and 200,648

Step by Step Solution

1. Step 1: Write the proportion equation
   91,576 : 200,648 = 200,648 : x
2. Step 2: Convert to fraction form
   91,576/200,648 = 200,648/x
3. Step 3: Cross multiply
   91,576x = 200,648 × 200,648
4. Step 4: Simplify right side
   91,576x = 40,259,619,904
5. Step 5: Solve for x
   x = 40,259,619,904/91,576
6. Step 6: Final answer
   x = 439,630.69