Finding the Third Proportional to 40,728 and 65,719

Step by Step Solution

1. Step 1: Write the proportion equation
   40,728 : 65,719 = 65,719 : x
2. Step 2: Convert to fraction form
   40,728/65,719 = 65,719/x
3. Step 3: Cross multiply
   40,728x = 65,719 × 65,719
4. Step 4: Simplify right side
   40,728x = 4,318,986,961
5. Step 5: Solve for x
   x = 4,318,986,961/40,728
6. Step 6: Final answer
   x = 106,044.66