Finding the Third Proportional to 639,005 and 1,367,774

Step by Step Solution

1. Step 1: Write the proportion equation
   639,005 : 1,367,774 = 1,367,774 : x
2. Step 2: Convert to fraction form
   639,005/1,367,774 = 1,367,774/x
3. Step 3: Cross multiply
   639,005x = 1,367,774 × 1,367,774
4. Step 4: Simplify right side
   639,005x = 1,870,805,715,076
5. Step 5: Solve for x
   x = 1,870,805,715,076/639,005
6. Step 6: Final answer
   x = 2,927,685.57