Finding the Third Proportional to 171,451.69 and 374,728.78

Step by Step Solution

1. Step 1: Write the proportion equation
   171,451.69 : 374,728.78 = 374,728.78 : x
2. Step 2: Convert to fraction form
   171,451.69/374,728.78 = 374,728.78/x
3. Step 3: Cross multiply
   171,451.69x = 374,728.78 × 374,728.78
4. Step 4: Simplify right side
   171,451.69x = 140,421,659,497.11
5. Step 5: Solve for x
   x = 140,421,659,497.11/171,451.69
6. Step 6: Final answer
   x = 819,015.91