Finding the Third Proportional to 80,212.78 and 124,146.42

Step by Step Solution

1. Step 1: Write the proportion equation
   80,212.78 : 124,146.42 = 124,146.42 : x
2. Step 2: Convert to fraction form
   80,212.78/124,146.42 = 124,146.42/x
3. Step 3: Cross multiply
   80,212.78x = 124,146.42 × 124,146.42
4. Step 4: Simplify right side
   80,212.78x = 15,412,334,064.37
5. Step 5: Solve for x
   x = 15,412,334,064.37/80,212.78
6. Step 6: Final answer
   x = 192,143.12