Finding the Third Proportional to 647,464 and 1,320,608

Step by Step Solution

1. Step 1: Write the proportion equation
   647,464 : 1,320,608 = 1,320,608 : x
2. Step 2: Convert to fraction form
   647,464/1,320,608 = 1,320,608/x
3. Step 3: Cross multiply
   647,464x = 1,320,608 × 1,320,608
4. Step 4: Simplify right side
   647,464x = 1,744,005,489,664
5. Step 5: Solve for x
   x = 1,744,005,489,664/647,464
6. Step 6: Final answer
   x = 2,693,594.53