Finding the Third Proportional to 635,790 and 1,380,930

Step by Step Solution

1. Step 1: Write the proportion equation
   635,790 : 1,380,930 = 1,380,930 : x
2. Step 2: Convert to fraction form
   635,790/1,380,930 = 1,380,930/x
3. Step 3: Cross multiply
   635,790x = 1,380,930 × 1,380,930
4. Step 4: Simplify right side
   635,790x = 1,906,967,664,900
5. Step 5: Solve for x
   x = 1,906,967,664,900/635,790
6. Step 6: Final answer
   x = 2,999,367.19