Finding the Third Proportional to 871,317 and 1,887,386

Step by Step Solution

1. Step 1: Write the proportion equation
   871,317 : 1,887,386 = 1,887,386 : x
2. Step 2: Convert to fraction form
   871,317/1,887,386 = 1,887,386/x
3. Step 3: Cross multiply
   871,317x = 1,887,386 × 1,887,386
4. Step 4: Simplify right side
   871,317x = 3,562,225,912,996
5. Step 5: Solve for x
   x = 3,562,225,912,996/871,317
6. Step 6: Final answer
   x = 4,088,323.67