Finding the Third Proportional to 1,139,931 and 1,778,908.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,139,931 : 1,778,908.50 = 1,778,908.50 : x
2. Step 2: Convert to fraction form
   1,139,931/1,778,908.50 = 1,778,908.50/x
3. Step 3: Cross multiply
   1,139,931x = 1,778,908.50 × 1,778,908.50
4. Step 4: Simplify right side
   1,139,931x = 3,164,515,451,372.25
5. Step 5: Solve for x
   x = 3,164,515,451,372.25/1,139,931
6. Step 6: Final answer
   x = 2,776,058.77