Finding the Third Proportional to 67,840 and 99,728

Step by Step Solution

1. Step 1: Write the proportion equation
   67,840 : 99,728 = 99,728 : x
2. Step 2: Convert to fraction form
   67,840/99,728 = 99,728/x
3. Step 3: Cross multiply
   67,840x = 99,728 × 99,728
4. Step 4: Simplify right side
   67,840x = 9,945,673,984
5. Step 5: Solve for x
   x = 9,945,673,984/67,840
6. Step 6: Final answer
   x = 146,604.86