Finding the Third Proportional to 1,277,236 and 2,128,642

Step by Step Solution

1. Step 1: Write the proportion equation
   1,277,236 : 2,128,642 = 2,128,642 : x
2. Step 2: Convert to fraction form
   1,277,236/2,128,642 = 2,128,642/x
3. Step 3: Cross multiply
   1,277,236x = 2,128,642 × 2,128,642
4. Step 4: Simplify right side
   1,277,236x = 4,531,116,764,164
5. Step 5: Solve for x
   x = 4,531,116,764,164/1,277,236
6. Step 6: Final answer
   x = 3,547,595.56