Finding the Third Proportional to 1,209,867 and 1,857,100

Step by Step Solution

1. Step 1: Write the proportion equation
   1,209,867 : 1,857,100 = 1,857,100 : x
2. Step 2: Convert to fraction form
   1,209,867/1,857,100 = 1,857,100/x
3. Step 3: Cross multiply
   1,209,867x = 1,857,100 × 1,857,100
4. Step 4: Simplify right side
   1,209,867x = 3,448,820,410,000
5. Step 5: Solve for x
   x = 3,448,820,410,000/1,209,867
6. Step 6: Final answer
   x = 2,850,578.13