Finding the Third Proportional to 1,998,922 and 4,370,660

Step by Step Solution

1. Step 1: Write the proportion equation
   1,998,922 : 4,370,660 = 4,370,660 : x
2. Step 2: Convert to fraction form
   1,998,922/4,370,660 = 4,370,660/x
3. Step 3: Cross multiply
   1,998,922x = 4,370,660 × 4,370,660
4. Step 4: Simplify right side
   1,998,922x = 19,102,668,835,600
5. Step 5: Solve for x
   x = 19,102,668,835,600/1,998,922
6. Step 6: Final answer
   x = 9,556,485.36