Finding the Third Proportional to 108,740 and 220,554

Step by Step Solution

1. Step 1: Write the proportion equation
   108,740 : 220,554 = 220,554 : x
2. Step 2: Convert to fraction form
   108,740/220,554 = 220,554/x
3. Step 3: Cross multiply
   108,740x = 220,554 × 220,554
4. Step 4: Simplify right side
   108,740x = 48,644,066,916
5. Step 5: Solve for x
   x = 48,644,066,916/108,740
6. Step 6: Final answer
   x = 447,342.90