Finding the Third Proportional to 1,668,422 and 3,642,660

Step by Step Solution

1. Step 1: Write the proportion equation
   1,668,422 : 3,642,660 = 3,642,660 : x
2. Step 2: Convert to fraction form
   1,668,422/3,642,660 = 3,642,660/x
3. Step 3: Cross multiply
   1,668,422x = 3,642,660 × 3,642,660
4. Step 4: Simplify right side
   1,668,422x = 13,268,971,875,600
5. Step 5: Solve for x
   x = 13,268,971,875,600/1,668,422
6. Step 6: Final answer
   x = 7,953,007.02