Finding the Third Proportional to 3,391,510 and 7,187,372

Step by Step Solution

1. Step 1: Write the proportion equation
   3,391,510 : 7,187,372 = 7,187,372 : x
2. Step 2: Convert to fraction form
   3,391,510/7,187,372 = 7,187,372/x
3. Step 3: Cross multiply
   3,391,510x = 7,187,372 × 7,187,372
4. Step 4: Simplify right side
   3,391,510x = 51,658,316,266,384
5. Step 5: Solve for x
   x = 51,658,316,266,384/3,391,510
6. Step 6: Final answer
   x = 15,231,656.77