Finding the Third Proportional to 1,277,272 and 2,128,695

Step by Step Solution

1. Step 1: Write the proportion equation
   1,277,272 : 2,128,695 = 2,128,695 : x
2. Step 2: Convert to fraction form
   1,277,272/2,128,695 = 2,128,695/x
3. Step 3: Cross multiply
   1,277,272x = 2,128,695 × 2,128,695
4. Step 4: Simplify right side
   1,277,272x = 4,531,342,403,025
5. Step 5: Solve for x
   x = 4,531,342,403,025/1,277,272
6. Step 6: Final answer
   x = 3,547,672.23