Finding the Third Proportional to 21,279.75 and 49,704.75

Step by Step Solution

1. Step 1: Write the proportion equation
   21,279.75 : 49,704.75 = 49,704.75 : x
2. Step 2: Convert to fraction form
   21,279.75/49,704.75 = 49,704.75/x
3. Step 3: Cross multiply
   21,279.75x = 49,704.75 × 49,704.75
4. Step 4: Simplify right side
   21,279.75x = 2,470,562,172.56
5. Step 5: Solve for x
   x = 2,470,562,172.56/21,279.75
6. Step 6: Final answer
   x = 116,099.21