Finding the Third Proportional to 820,720 and 1,227,792

Step by Step Solution

1. Step 1: Write the proportion equation
   820,720 : 1,227,792 = 1,227,792 : x
2. Step 2: Convert to fraction form
   820,720/1,227,792 = 1,227,792/x
3. Step 3: Cross multiply
   820,720x = 1,227,792 × 1,227,792
4. Step 4: Simplify right side
   820,720x = 1,507,473,195,264
5. Step 5: Solve for x
   x = 1,507,473,195,264/820,720
6. Step 6: Final answer
   x = 1,836,769.17