Finding the Third Proportional to 627,136 and 1,379,128

Step by Step Solution

1. Step 1: Write the proportion equation
   627,136 : 1,379,128 = 1,379,128 : x
2. Step 2: Convert to fraction form
   627,136/1,379,128 = 1,379,128/x
3. Step 3: Cross multiply
   627,136x = 1,379,128 × 1,379,128
4. Step 4: Simplify right side
   627,136x = 1,901,994,040,384
5. Step 5: Solve for x
   x = 1,901,994,040,384/627,136
6. Step 6: Final answer
   x = 3,032,825.48