Finding the Third Proportional to 284,431.50 and 627,912

Step by Step Solution

1. Step 1: Write the proportion equation
   284,431.50 : 627,912 = 627,912 : x
2. Step 2: Convert to fraction form
   284,431.50/627,912 = 627,912/x
3. Step 3: Cross multiply
   284,431.50x = 627,912 × 627,912
4. Step 4: Simplify right side
   284,431.50x = 394,273,479,744
5. Step 5: Solve for x
   x = 394,273,479,744/284,431.50
6. Step 6: Final answer
   x = 1,386,180.78