Finding the Third Proportional to 640,992 and 1,367,796

Step by Step Solution

1. Step 1: Write the proportion equation
   640,992 : 1,367,796 = 1,367,796 : x
2. Step 2: Convert to fraction form
   640,992/1,367,796 = 1,367,796/x
3. Step 3: Cross multiply
   640,992x = 1,367,796 × 1,367,796
4. Step 4: Simplify right side
   640,992x = 1,870,865,897,616
5. Step 5: Solve for x
   x = 1,870,865,897,616/640,992
6. Step 6: Final answer
   x = 2,918,703.97