Finding the Third Proportional to 1,139,919 and 1,778,889

Step by Step Solution

1. Step 1: Write the proportion equation
   1,139,919 : 1,778,889 = 1,778,889 : x
2. Step 2: Convert to fraction form
   1,139,919/1,778,889 = 1,778,889/x
3. Step 3: Cross multiply
   1,139,919x = 1,778,889 × 1,778,889
4. Step 4: Simplify right side
   1,139,919x = 3,164,446,074,321
5. Step 5: Solve for x
   x = 3,164,446,074,321/1,139,919
6. Step 6: Final answer
   x = 2,776,027.13