Finding the Third Proportional to 45,728 and 60,691.50

Step by Step Solution

1. Step 1: Write the proportion equation
   45,728 : 60,691.50 = 60,691.50 : x
2. Step 2: Convert to fraction form
   45,728/60,691.50 = 60,691.50/x
3. Step 3: Cross multiply
   45,728x = 60,691.50 × 60,691.50
4. Step 4: Simplify right side
   45,728x = 3,683,458,172.25
5. Step 5: Solve for x
   x = 3,683,458,172.25/45,728
6. Step 6: Final answer
   x = 80,551.48