Finding the Third Proportional to 267,644 and 394,072.25

Step by Step Solution

1. Step 1: Write the proportion equation
   267,644 : 394,072.25 = 394,072.25 : x
2. Step 2: Convert to fraction form
   267,644/394,072.25 = 394,072.25/x
3. Step 3: Cross multiply
   267,644x = 394,072.25 × 394,072.25
4. Step 4: Simplify right side
   267,644x = 155,292,938,220.06
5. Step 5: Solve for x
   x = 155,292,938,220.06/267,644
6. Step 6: Final answer
   x = 580,222.00