Finding the Third Proportional to 1,201,639 and 1,855,446

Step by Step Solution

1. Step 1: Write the proportion equation
   1,201,639 : 1,855,446 = 1,855,446 : x
2. Step 2: Convert to fraction form
   1,201,639/1,855,446 = 1,855,446/x
3. Step 3: Cross multiply
   1,201,639x = 1,855,446 × 1,855,446
4. Step 4: Simplify right side
   1,201,639x = 3,442,679,858,916
5. Step 5: Solve for x
   x = 3,442,679,858,916/1,201,639
6. Step 6: Final answer
   x = 2,864,986.79