Finding the Third Proportional to 80,728 and 164,740

Step by Step Solution

1. Step 1: Write the proportion equation
   80,728 : 164,740 = 164,740 : x
2. Step 2: Convert to fraction form
   80,728/164,740 = 164,740/x
3. Step 3: Cross multiply
   80,728x = 164,740 × 164,740
4. Step 4: Simplify right side
   80,728x = 27,139,267,600
5. Step 5: Solve for x
   x = 27,139,267,600/80,728
6. Step 6: Final answer
   x = 336,181.59