Finding the Third Proportional to 855,390 and 1,837,140

Step by Step Solution

1. Step 1: Write the proportion equation
   855,390 : 1,837,140 = 1,837,140 : x
2. Step 2: Convert to fraction form
   855,390/1,837,140 = 1,837,140/x
3. Step 3: Cross multiply
   855,390x = 1,837,140 × 1,837,140
4. Step 4: Simplify right side
   855,390x = 3,375,083,379,600
5. Step 5: Solve for x
   x = 3,375,083,379,600/855,390
6. Step 6: Final answer
   x = 3,945,666.16