Finding the Third Proportional to 1,018,515 and 2,120,706

Step by Step Solution

1. Step 1: Write the proportion equation
   1,018,515 : 2,120,706 = 2,120,706 : x
2. Step 2: Convert to fraction form
   1,018,515/2,120,706 = 2,120,706/x
3. Step 3: Cross multiply
   1,018,515x = 2,120,706 × 2,120,706
4. Step 4: Simplify right side
   1,018,515x = 4,497,393,938,436
5. Step 5: Solve for x
   x = 4,497,393,938,436/1,018,515
6. Step 6: Final answer
   x = 4,415,638.39