Finding the Third Proportional to 858,459 and 1,849,770

Step by Step Solution

1. Step 1: Write the proportion equation
   858,459 : 1,849,770 = 1,849,770 : x
2. Step 2: Convert to fraction form
   858,459/1,849,770 = 1,849,770/x
3. Step 3: Cross multiply
   858,459x = 1,849,770 × 1,849,770
4. Step 4: Simplify right side
   858,459x = 3,421,649,052,900
5. Step 5: Solve for x
   x = 3,421,649,052,900/858,459
6. Step 6: Final answer
   x = 3,985,803.69