Finding the Third Proportional to 1,139,907 and 1,778,871

Step by Step Solution

1. Step 1: Write the proportion equation
   1,139,907 : 1,778,871 = 1,778,871 : x
2. Step 2: Convert to fraction form
   1,139,907/1,778,871 = 1,778,871/x
3. Step 3: Cross multiply
   1,139,907x = 1,778,871 × 1,778,871
4. Step 4: Simplify right side
   1,139,907x = 3,164,382,034,641
5. Step 5: Solve for x
   x = 3,164,382,034,641/1,139,907
6. Step 6: Final answer
   x = 2,776,000.18