Finding the Third Proportional to 1,277,256 and 2,128,674

Step by Step Solution

1. Step 1: Write the proportion equation
   1,277,256 : 2,128,674 = 2,128,674 : x
2. Step 2: Convert to fraction form
   1,277,256/2,128,674 = 2,128,674/x
3. Step 3: Cross multiply
   1,277,256x = 2,128,674 × 2,128,674
4. Step 4: Simplify right side
   1,277,256x = 4,531,252,998,276
5. Step 5: Solve for x
   x = 4,531,252,998,276/1,277,256
6. Step 6: Final answer
   x = 3,547,646.67