Finding the Third Proportional to 3,477,980 and 7,418,188

Step by Step Solution

1. Step 1: Write the proportion equation
   3,477,980 : 7,418,188 = 7,418,188 : x
2. Step 2: Convert to fraction form
   3,477,980/7,418,188 = 7,418,188/x
3. Step 3: Cross multiply
   3,477,980x = 7,418,188 × 7,418,188
4. Step 4: Simplify right side
   3,477,980x = 55,029,513,203,344
5. Step 5: Solve for x
   x = 55,029,513,203,344/3,477,980
6. Step 6: Final answer
   x = 15,822,262.69