Finding the Third Proportional to 1,689,366 and 3,642,792

Step by Step Solution

1. Step 1: Write the proportion equation
   1,689,366 : 3,642,792 = 3,642,792 : x
2. Step 2: Convert to fraction form
   1,689,366/3,642,792 = 3,642,792/x
3. Step 3: Cross multiply
   1,689,366x = 3,642,792 × 3,642,792
4. Step 4: Simplify right side
   1,689,366x = 13,269,933,555,264
5. Step 5: Solve for x
   x = 13,269,933,555,264/1,689,366
6. Step 6: Final answer
   x = 7,854,978.47