Finding the Third Proportional to 76,486.78 and 166,105.69

Step by Step Solution

1. Step 1: Write the proportion equation
   76,486.78 : 166,105.69 = 166,105.69 : x
2. Step 2: Convert to fraction form
   76,486.78/166,105.69 = 166,105.69/x
3. Step 3: Cross multiply
   76,486.78x = 166,105.69 × 166,105.69
4. Step 4: Simplify right side
   76,486.78x = 27,591,099,419.85
5. Step 5: Solve for x
   x = 27,591,099,419.85/76,486.78
6. Step 6: Final answer
   x = 360,730.30