Finding the Third Proportional to 7,218,518 and 16,050,978

Step by Step Solution

1. Step 1: Write the proportion equation
   7,218,518 : 16,050,978 = 16,050,978 : x
2. Step 2: Convert to fraction form
   7,218,518/16,050,978 = 16,050,978/x
3. Step 3: Cross multiply
   7,218,518x = 16,050,978 × 16,050,978
4. Step 4: Simplify right side
   7,218,518x = 257,633,894,756,484
5. Step 5: Solve for x
   x = 257,633,894,756,484/7,218,518
6. Step 6: Final answer
   x = 35,690,690.91