Finding the Third Proportional to 3,345,630 and 7,122,828

Step by Step Solution

1. Step 1: Write the proportion equation
   3,345,630 : 7,122,828 = 7,122,828 : x
2. Step 2: Convert to fraction form
   3,345,630/7,122,828 = 7,122,828/x
3. Step 3: Cross multiply
   3,345,630x = 7,122,828 × 7,122,828
4. Step 4: Simplify right side
   3,345,630x = 50,734,678,717,584
5. Step 5: Solve for x
   x = 50,734,678,717,584/3,345,630
6. Step 6: Final answer
   x = 15,164,461.92