Finding the Third Proportional to 49,680 and 72,936

Step by Step Solution

1. Step 1: Write the proportion equation
   49,680 : 72,936 = 72,936 : x
2. Step 2: Convert to fraction form
   49,680/72,936 = 72,936/x
3. Step 3: Cross multiply
   49,680x = 72,936 × 72,936
4. Step 4: Simplify right side
   49,680x = 5,319,660,096
5. Step 5: Solve for x
   x = 5,319,660,096/49,680
6. Step 6: Final answer
   x = 107,078.50