Finding the Third Proportional to 1,139,902 and 1,778,864

Step by Step Solution

1. Step 1: Write the proportion equation
   1,139,902 : 1,778,864 = 1,778,864 : x
2. Step 2: Convert to fraction form
   1,139,902/1,778,864 = 1,778,864/x
3. Step 3: Cross multiply
   1,139,902x = 1,778,864 × 1,778,864
4. Step 4: Simplify right side
   1,139,902x = 3,164,357,130,496
5. Step 5: Solve for x
   x = 3,164,357,130,496/1,139,902
6. Step 6: Final answer
   x = 2,775,990.51