Finding the Third Proportional to 857,320 and 1,811,840

Step by Step Solution

1. Step 1: Write the proportion equation
   857,320 : 1,811,840 = 1,811,840 : x
2. Step 2: Convert to fraction form
   857,320/1,811,840 = 1,811,840/x
3. Step 3: Cross multiply
   857,320x = 1,811,840 × 1,811,840
4. Step 4: Simplify right side
   857,320x = 3,282,764,185,600
5. Step 5: Solve for x
   x = 3,282,764,185,600/857,320
6. Step 6: Final answer
   x = 3,829,100.20