Finding the Third Proportional to 1,200,851 and 1,857,378

Step by Step Solution

1. Step 1: Write the proportion equation
   1,200,851 : 1,857,378 = 1,857,378 : x
2. Step 2: Convert to fraction form
   1,200,851/1,857,378 = 1,857,378/x
3. Step 3: Cross multiply
   1,200,851x = 1,857,378 × 1,857,378
4. Step 4: Simplify right side
   1,200,851x = 3,449,853,034,884
5. Step 5: Solve for x
   x = 3,449,853,034,884/1,200,851
6. Step 6: Final answer
   x = 2,872,840.21