Finding the Third Proportional to 3,854,340 and 8,142,792

Step by Step Solution

1. Step 1: Write the proportion equation
   3,854,340 : 8,142,792 = 8,142,792 : x
2. Step 2: Convert to fraction form
   3,854,340/8,142,792 = 8,142,792/x
3. Step 3: Cross multiply
   3,854,340x = 8,142,792 × 8,142,792
4. Step 4: Simplify right side
   3,854,340x = 66,305,061,555,264
5. Step 5: Solve for x
   x = 66,305,061,555,264/3,854,340
6. Step 6: Final answer
   x = 17,202,701.77