Finding the Third Proportional to 647,340 and 1,320,384

Step by Step Solution

1. Step 1: Write the proportion equation
   647,340 : 1,320,384 = 1,320,384 : x
2. Step 2: Convert to fraction form
   647,340/1,320,384 = 1,320,384/x
3. Step 3: Cross multiply
   647,340x = 1,320,384 × 1,320,384
4. Step 4: Simplify right side
   647,340x = 1,743,413,907,456
5. Step 5: Solve for x
   x = 1,743,413,907,456/647,340
6. Step 6: Final answer
   x = 2,693,196.63