Finding the Third Proportional to 1,820,746 and 3,989,792

Step by Step Solution

1. Step 1: Write the proportion equation
   1,820,746 : 3,989,792 = 3,989,792 : x
2. Step 2: Convert to fraction form
   1,820,746/3,989,792 = 3,989,792/x
3. Step 3: Cross multiply
   1,820,746x = 3,989,792 × 3,989,792
4. Step 4: Simplify right side
   1,820,746x = 15,918,440,203,264
5. Step 5: Solve for x
   x = 15,918,440,203,264/1,820,746
6. Step 6: Final answer
   x = 8,742,812.12