Finding the Third Proportional to 419,044 and 648,721.50

Step by Step Solution

1. Step 1: Write the proportion equation
   419,044 : 648,721.50 = 648,721.50 : x
2. Step 2: Convert to fraction form
   419,044/648,721.50 = 648,721.50/x
3. Step 3: Cross multiply
   419,044x = 648,721.50 × 648,721.50
4. Step 4: Simplify right side
   419,044x = 420,839,584,562.25
5. Step 5: Solve for x
   x = 420,839,584,562.25/419,044
6. Step 6: Final answer
   x = 1,004,284.95