Finding the Third Proportional to 620,868 and 1,267,980

Step by Step Solution

1. Step 1: Write the proportion equation
   620,868 : 1,267,980 = 1,267,980 : x
2. Step 2: Convert to fraction form
   620,868/1,267,980 = 1,267,980/x
3. Step 3: Cross multiply
   620,868x = 1,267,980 × 1,267,980
4. Step 4: Simplify right side
   620,868x = 1,607,773,280,400
5. Step 5: Solve for x
   x = 1,607,773,280,400/620,868
6. Step 6: Final answer
   x = 2,589,557.33