Finding the Third Proportional to 1,102,778 and 1,686,608

Step by Step Solution

1. Step 1: Write the proportion equation
   1,102,778 : 1,686,608 = 1,686,608 : x
2. Step 2: Convert to fraction form
   1,102,778/1,686,608 = 1,686,608/x
3. Step 3: Cross multiply
   1,102,778x = 1,686,608 × 1,686,608
4. Step 4: Simplify right side
   1,102,778x = 2,844,646,545,664
5. Step 5: Solve for x
   x = 2,844,646,545,664/1,102,778
6. Step 6: Final answer
   x = 2,579,527.83