Finding the Third Proportional to 913,792 and 1,980,128

Step by Step Solution

1. Step 1: Write the proportion equation
   913,792 : 1,980,128 = 1,980,128 : x
2. Step 2: Convert to fraction form
   913,792/1,980,128 = 1,980,128/x
3. Step 3: Cross multiply
   913,792x = 1,980,128 × 1,980,128
4. Step 4: Simplify right side
   913,792x = 3,920,906,896,384
5. Step 5: Solve for x
   x = 3,920,906,896,384/913,792
6. Step 6: Final answer
   x = 4,290,808.95