Finding the Third Proportional to 1,278,722 and 2,798,254

Step by Step Solution

1. Step 1: Write the proportion equation
   1,278,722 : 2,798,254 = 2,798,254 : x
2. Step 2: Convert to fraction form
   1,278,722/2,798,254 = 2,798,254/x
3. Step 3: Cross multiply
   1,278,722x = 2,798,254 × 2,798,254
4. Step 4: Simplify right side
   1,278,722x = 7,830,225,448,516
5. Step 5: Solve for x
   x = 7,830,225,448,516/1,278,722
6. Step 6: Final answer
   x = 6,123,477.54