Finding the Third Proportional to 3,489,012 and 7,400,772

Step by Step Solution

1. Step 1: Write the proportion equation
   3,489,012 : 7,400,772 = 7,400,772 : x
2. Step 2: Convert to fraction form
   3,489,012/7,400,772 = 7,400,772/x
3. Step 3: Cross multiply
   3,489,012x = 7,400,772 × 7,400,772
4. Step 4: Simplify right side
   3,489,012x = 54,771,426,195,984
5. Step 5: Solve for x
   x = 54,771,426,195,984/3,489,012
6. Step 6: Final answer
   x = 15,698,262.49