Finding the Third Proportional to 3,477,978 and 7,418,184

Step by Step Solution

1. Step 1: Write the proportion equation
   3,477,978 : 7,418,184 = 7,418,184 : x
2. Step 2: Convert to fraction form
   3,477,978/7,418,184 = 7,418,184/x
3. Step 3: Cross multiply
   3,477,978x = 7,418,184 × 7,418,184
4. Step 4: Simplify right side
   3,477,978x = 55,029,453,857,856
5. Step 5: Solve for x
   x = 55,029,453,857,856/3,477,978
6. Step 6: Final answer
   x = 15,822,254.73