Finding the Third Proportional to 1,278,709 and 2,798,230

Step by Step Solution

1. Step 1: Write the proportion equation
   1,278,709 : 2,798,230 = 2,798,230 : x
2. Step 2: Convert to fraction form
   1,278,709/2,798,230 = 2,798,230/x
3. Step 3: Cross multiply
   1,278,709x = 2,798,230 × 2,798,230
4. Step 4: Simplify right side
   1,278,709x = 7,830,091,132,900
5. Step 5: Solve for x
   x = 7,830,091,132,900/1,278,709
6. Step 6: Final answer
   x = 6,123,434.76