Finding the Third Proportional to 616,878 and 1,427,988

Step by Step Solution

1. Step 1: Write the proportion equation
   616,878 : 1,427,988 = 1,427,988 : x
2. Step 2: Convert to fraction form
   616,878/1,427,988 = 1,427,988/x
3. Step 3: Cross multiply
   616,878x = 1,427,988 × 1,427,988
4. Step 4: Simplify right side
   616,878x = 2,039,149,728,144
5. Step 5: Solve for x
   x = 2,039,149,728,144/616,878
6. Step 6: Final answer
   x = 3,305,596.45