Finding the Third Proportional to 1,277,238 and 2,128,645

Step by Step Solution

1. Step 1: Write the proportion equation
   1,277,238 : 2,128,645 = 2,128,645 : x
2. Step 2: Convert to fraction form
   1,277,238/2,128,645 = 2,128,645/x
3. Step 3: Cross multiply
   1,277,238x = 2,128,645 × 2,128,645
4. Step 4: Simplify right side
   1,277,238x = 4,531,129,536,025
5. Step 5: Solve for x
   x = 4,531,129,536,025/1,277,238
6. Step 6: Final answer
   x = 3,547,600.01