Finding the Third Proportional to 1,139,917 and 1,778,887

Step by Step Solution

1. Step 1: Write the proportion equation
   1,139,917 : 1,778,887 = 1,778,887 : x
2. Step 2: Convert to fraction form
   1,139,917/1,778,887 = 1,778,887/x
3. Step 3: Cross multiply
   1,139,917x = 1,778,887 × 1,778,887
4. Step 4: Simplify right side
   1,139,917x = 3,164,438,958,769
5. Step 5: Solve for x
   x = 3,164,438,958,769/1,139,917
6. Step 6: Final answer
   x = 2,776,025.76