Finding the Third Proportional to 1,277,270 and 2,128,692

Step by Step Solution

1. Step 1: Write the proportion equation
   1,277,270 : 2,128,692 = 2,128,692 : x
2. Step 2: Convert to fraction form
   1,277,270/2,128,692 = 2,128,692/x
3. Step 3: Cross multiply
   1,277,270x = 2,128,692 × 2,128,692
4. Step 4: Simplify right side
   1,277,270x = 4,531,329,630,864
5. Step 5: Solve for x
   x = 4,531,329,630,864/1,277,270
6. Step 6: Final answer
   x = 3,547,667.78