Finding the Third Proportional to 1,399,856 and 2,997,988

Step by Step Solution

1. Step 1: Write the proportion equation
   1,399,856 : 2,997,988 = 2,997,988 : x
2. Step 2: Convert to fraction form
   1,399,856/2,997,988 = 2,997,988/x
3. Step 3: Cross multiply
   1,399,856x = 2,997,988 × 2,997,988
4. Step 4: Simplify right side
   1,399,856x = 8,987,932,048,144
5. Step 5: Solve for x
   x = 8,987,932,048,144/1,399,856
6. Step 6: Final answer
   x = 6,420,611.87