Finding the Third Proportional to 1,277,264 and 2,128,683

Step by Step Solution

1. Step 1: Write the proportion equation
   1,277,264 : 2,128,683 = 2,128,683 : x
2. Step 2: Convert to fraction form
   1,277,264/2,128,683 = 2,128,683/x
3. Step 3: Cross multiply
   1,277,264x = 2,128,683 × 2,128,683
4. Step 4: Simplify right side
   1,277,264x = 4,531,291,314,489
5. Step 5: Solve for x
   x = 4,531,291,314,489/1,277,264
6. Step 6: Final answer
   x = 3,547,654.45