Finding the Third Proportional to 1,278,710 and 2,798,234

Step by Step Solution

1. Step 1: Write the proportion equation
   1,278,710 : 2,798,234 = 2,798,234 : x
2. Step 2: Convert to fraction form
   1,278,710/2,798,234 = 2,798,234/x
3. Step 3: Cross multiply
   1,278,710x = 2,798,234 × 2,798,234
4. Step 4: Simplify right side
   1,278,710x = 7,830,113,518,756
5. Step 5: Solve for x
   x = 7,830,113,518,756/1,278,710
6. Step 6: Final answer
   x = 6,123,447.47