Finding the Third Proportional to 647,474 and 1,320,628

Step by Step Solution

1. Step 1: Write the proportion equation
   647,474 : 1,320,628 = 1,320,628 : x
2. Step 2: Convert to fraction form
   647,474/1,320,628 = 1,320,628/x
3. Step 3: Cross multiply
   647,474x = 1,320,628 × 1,320,628
4. Step 4: Simplify right side
   647,474x = 1,744,058,314,384
5. Step 5: Solve for x
   x = 1,744,058,314,384/647,474
6. Step 6: Final answer
   x = 2,693,634.52