Finding the Third Proportional to 1,139,890 and 1,778,847

Step by Step Solution

1. Step 1: Write the proportion equation
   1,139,890 : 1,778,847 = 1,778,847 : x
2. Step 2: Convert to fraction form
   1,139,890/1,778,847 = 1,778,847/x
3. Step 3: Cross multiply
   1,139,890x = 1,778,847 × 1,778,847
4. Step 4: Simplify right side
   1,139,890x = 3,164,296,649,409
5. Step 5: Solve for x
   x = 3,164,296,649,409/1,139,890
6. Step 6: Final answer
   x = 2,775,966.67