Finding the Third Proportional to 1,277,266 and 2,128,686

Step by Step Solution

1. Step 1: Write the proportion equation
   1,277,266 : 2,128,686 = 2,128,686 : x
2. Step 2: Convert to fraction form
   1,277,266/2,128,686 = 2,128,686/x
3. Step 3: Cross multiply
   1,277,266x = 2,128,686 × 2,128,686
4. Step 4: Simplify right side
   1,277,266x = 4,531,304,086,596
5. Step 5: Solve for x
   x = 4,531,304,086,596/1,277,266
6. Step 6: Final answer
   x = 3,547,658.90