Finding the Third Proportional to 74,142.75 and 174,939.94

Step by Step Solution

1. Step 1: Write the proportion equation
   74,142.75 : 174,939.94 = 174,939.94 : x
2. Step 2: Convert to fraction form
   74,142.75/174,939.94 = 174,939.94/x
3. Step 3: Cross multiply
   74,142.75x = 174,939.94 × 174,939.94
4. Step 4: Simplify right side
   74,142.75x = 30,603,981,732.50
5. Step 5: Solve for x
   x = 30,603,981,732.50/74,142.75
6. Step 6: Final answer
   x = 412,771.06