Finding the Third Proportional to 45,728 and 60,912

Step by Step Solution

1. Step 1: Write the proportion equation
   45,728 : 60,912 = 60,912 : x
2. Step 2: Convert to fraction form
   45,728/60,912 = 60,912/x
3. Step 3: Cross multiply
   45,728x = 60,912 × 60,912
4. Step 4: Simplify right side
   45,728x = 3,710,271,744
5. Step 5: Solve for x
   x = 3,710,271,744/45,728
6. Step 6: Final answer
   x = 81,137.85