Finding the Third Proportional to 642,952 and 1,382,678

Step by Step Solution

1. Step 1: Write the proportion equation
   642,952 : 1,382,678 = 1,382,678 : x
2. Step 2: Convert to fraction form
   642,952/1,382,678 = 1,382,678/x
3. Step 3: Cross multiply
   642,952x = 1,382,678 × 1,382,678
4. Step 4: Simplify right side
   642,952x = 1,911,798,451,684
5. Step 5: Solve for x
   x = 1,911,798,451,684/642,952
6. Step 6: Final answer
   x = 2,973,469.95