Finding the Third Proportional to 1,661,212 and 3,636,920

Step by Step Solution

1. Step 1: Write the proportion equation
   1,661,212 : 3,636,920 = 3,636,920 : x
2. Step 2: Convert to fraction form
   1,661,212/3,636,920 = 3,636,920/x
3. Step 3: Cross multiply
   1,661,212x = 3,636,920 × 3,636,920
4. Step 4: Simplify right side
   1,661,212x = 13,227,187,086,400
5. Step 5: Solve for x
   x = 13,227,187,086,400/1,661,212
6. Step 6: Final answer
   x = 7,962,371.50