Finding the Third Proportional to 50,868 and 78,858

Step by Step Solution

1. Step 1: Write the proportion equation
   50,868 : 78,858 = 78,858 : x
2. Step 2: Convert to fraction form
   50,868/78,858 = 78,858/x
3. Step 3: Cross multiply
   50,868x = 78,858 × 78,858
4. Step 4: Simplify right side
   50,868x = 6,218,584,164
5. Step 5: Solve for x
   x = 6,218,584,164/50,868
6. Step 6: Final answer
   x = 122,249.43