Finding the Third Proportional to 1,277,258 and 2,128,677

Step by Step Solution

1. Step 1: Write the proportion equation
   1,277,258 : 2,128,677 = 2,128,677 : x
2. Step 2: Convert to fraction form
   1,277,258/2,128,677 = 2,128,677/x
3. Step 3: Cross multiply
   1,277,258x = 2,128,677 × 2,128,677
4. Step 4: Simplify right side
   1,277,258x = 4,531,265,770,329
5. Step 5: Solve for x
   x = 4,531,265,770,329/1,277,258
6. Step 6: Final answer
   x = 3,547,651.12