Finding the Third Proportional to 1,256,821 and 2,712,864

Step by Step Solution

1. Step 1: Write the proportion equation
   1,256,821 : 2,712,864 = 2,712,864 : x
2. Step 2: Convert to fraction form
   1,256,821/2,712,864 = 2,712,864/x
3. Step 3: Cross multiply
   1,256,821x = 2,712,864 × 2,712,864
4. Step 4: Simplify right side
   1,256,821x = 7,359,631,082,496
5. Step 5: Solve for x
   x = 7,359,631,082,496/1,256,821
6. Step 6: Final answer
   x = 5,855,751.20