Finding the Third Proportional to 1,403,440 and 3,086,816

Step by Step Solution

1. Step 1: Write the proportion equation
   1,403,440 : 3,086,816 = 3,086,816 : x
2. Step 2: Convert to fraction form
   1,403,440/3,086,816 = 3,086,816/x
3. Step 3: Cross multiply
   1,403,440x = 3,086,816 × 3,086,816
4. Step 4: Simplify right side
   1,403,440x = 9,528,433,017,856
5. Step 5: Solve for x
   x = 9,528,433,017,856/1,403,440
6. Step 6: Final answer
   x = 6,789,341.20