Finding the Third Proportional to 947,920 and 2,105,792

Step by Step Solution

1. Step 1: Write the proportion equation
   947,920 : 2,105,792 = 2,105,792 : x
2. Step 2: Convert to fraction form
   947,920/2,105,792 = 2,105,792/x
3. Step 3: Cross multiply
   947,920x = 2,105,792 × 2,105,792
4. Step 4: Simplify right side
   947,920x = 4,434,359,947,264
5. Step 5: Solve for x
   x = 4,434,359,947,264/947,920
6. Step 6: Final answer
   x = 4,677,989.65