Finding the Third Proportional to 192,078 and 276,697.69

Step by Step Solution

1. Step 1: Write the proportion equation
   192,078 : 276,697.69 = 276,697.69 : x
2. Step 2: Convert to fraction form
   192,078/276,697.69 = 276,697.69/x
3. Step 3: Cross multiply
   192,078x = 276,697.69 × 276,697.69
4. Step 4: Simplify right side
   192,078x = 76,561,610,267.85
5. Step 5: Solve for x
   x = 76,561,610,267.85/192,078
6. Step 6: Final answer
   x = 398,596.46