Finding the Third Proportional to 851,638 and 1,854,476

Step by Step Solution

1. Step 1: Write the proportion equation
   851,638 : 1,854,476 = 1,854,476 : x
2. Step 2: Convert to fraction form
   851,638/1,854,476 = 1,854,476/x
3. Step 3: Cross multiply
   851,638x = 1,854,476 × 1,854,476
4. Step 4: Simplify right side
   851,638x = 3,439,081,234,576
5. Step 5: Solve for x
   x = 3,439,081,234,576/851,638
6. Step 6: Final answer
   x = 4,038,196.08