Finding the Third Proportional to 871,311 and 1,887,376

Step by Step Solution

1. Step 1: Write the proportion equation
   871,311 : 1,887,376 = 1,887,376 : x
2. Step 2: Convert to fraction form
   871,311/1,887,376 = 1,887,376/x
3. Step 3: Cross multiply
   871,311x = 1,887,376 × 1,887,376
4. Step 4: Simplify right side
   871,311x = 3,562,188,165,376
5. Step 5: Solve for x
   x = 3,562,188,165,376/871,311
6. Step 6: Final answer
   x = 4,088,308.50