Finding the Third Proportional to 3,391,520 and 7,187,392

Step by Step Solution

1. Step 1: Write the proportion equation
   3,391,520 : 7,187,392 = 7,187,392 : x
2. Step 2: Convert to fraction form
   3,391,520/7,187,392 = 7,187,392/x
3. Step 3: Cross multiply
   3,391,520x = 7,187,392 × 7,187,392
4. Step 4: Simplify right side
   3,391,520x = 51,658,603,761,664
5. Step 5: Solve for x
   x = 51,658,603,761,664/3,391,520
6. Step 6: Final answer
   x = 15,231,696.63