Finding the Third Proportional to 267,618 and 394,034.50

Step by Step Solution

1. Step 1: Write the proportion equation
   267,618 : 394,034.50 = 394,034.50 : x
2. Step 2: Convert to fraction form
   267,618/394,034.50 = 394,034.50/x
3. Step 3: Cross multiply
   267,618x = 394,034.50 × 394,034.50
4. Step 4: Simplify right side
   267,618x = 155,263,187,190.25
5. Step 5: Solve for x
   x = 155,263,187,190.25/267,618
6. Step 6: Final answer
   x = 580,167.21