Finding the Third Proportional to 828,912 and 1,807,680

Step by Step Solution

1. Step 1: Write the proportion equation
   828,912 : 1,807,680 = 1,807,680 : x
2. Step 2: Convert to fraction form
   828,912/1,807,680 = 1,807,680/x
3. Step 3: Cross multiply
   828,912x = 1,807,680 × 1,807,680
4. Step 4: Simplify right side
   828,912x = 3,267,706,982,400
5. Step 5: Solve for x
   x = 3,267,706,982,400/828,912
6. Step 6: Final answer
   x = 3,942,163.92