Finding the Third Proportional to 642,960 and 1,382,697

Step by Step Solution

1. Step 1: Write the proportion equation
   642,960 : 1,382,697 = 1,382,697 : x
2. Step 2: Convert to fraction form
   642,960/1,382,697 = 1,382,697/x
3. Step 3: Cross multiply
   642,960x = 1,382,697 × 1,382,697
4. Step 4: Simplify right side
   642,960x = 1,911,850,993,809
5. Step 5: Solve for x
   x = 1,911,850,993,809/642,960
6. Step 6: Final answer
   x = 2,973,514.67