Finding the Third Proportional to 638,770 and 1,382,732

Step by Step Solution

1. Step 1: Write the proportion equation
   638,770 : 1,382,732 = 1,382,732 : x
2. Step 2: Convert to fraction form
   638,770/1,382,732 = 1,382,732/x
3. Step 3: Cross multiply
   638,770x = 1,382,732 × 1,382,732
4. Step 4: Simplify right side
   638,770x = 1,911,947,783,824
5. Step 5: Solve for x
   x = 1,911,947,783,824/638,770
6. Step 6: Final answer
   x = 2,993,170.91