Finding the Third Proportional to 647,419.50 and 1,320,543

Step by Step Solution

1. Step 1: Write the proportion equation
   647,419.50 : 1,320,543 = 1,320,543 : x
2. Step 2: Convert to fraction form
   647,419.50/1,320,543 = 1,320,543/x
3. Step 3: Cross multiply
   647,419.50x = 1,320,543 × 1,320,543
4. Step 4: Simplify right side
   647,419.50x = 1,743,833,814,849
5. Step 5: Solve for x
   x = 1,743,833,814,849/647,419.50
6. Step 6: Final answer
   x = 2,693,514.51