Finding the Third Proportional to 48,728 and 72,900

Step by Step Solution

1. Step 1: Write the proportion equation
   48,728 : 72,900 = 72,900 : x
2. Step 2: Convert to fraction form
   48,728/72,900 = 72,900/x
3. Step 3: Cross multiply
   48,728x = 72,900 × 72,900
4. Step 4: Simplify right side
   48,728x = 5,314,410,000
5. Step 5: Solve for x
   x = 5,314,410,000/48,728
6. Step 6: Final answer
   x = 109,062.76