Finding the Third Proportional to 1,267,020 and 2,638,512

Step by Step Solution

1. Step 1: Write the proportion equation
   1,267,020 : 2,638,512 = 2,638,512 : x
2. Step 2: Convert to fraction form
   1,267,020/2,638,512 = 2,638,512/x
3. Step 3: Cross multiply
   1,267,020x = 2,638,512 × 2,638,512
4. Step 4: Simplify right side
   1,267,020x = 6,961,745,574,144
5. Step 5: Solve for x
   x = 6,961,745,574,144/1,267,020
6. Step 6: Final answer
   x = 5,494,582.23