Finding the Third Proportional to 871,036 and 1,821,890

Step by Step Solution

1. Step 1: Write the proportion equation
   871,036 : 1,821,890 = 1,821,890 : x
2. Step 2: Convert to fraction form
   871,036/1,821,890 = 1,821,890/x
3. Step 3: Cross multiply
   871,036x = 1,821,890 × 1,821,890
4. Step 4: Simplify right side
   871,036x = 3,319,283,172,100
5. Step 5: Solve for x
   x = 3,319,283,172,100/871,036
6. Step 6: Final answer
   x = 3,810,730.18