Finding the Third Proportional to 16,438,016 and 21,811,392

Step by Step Solution

1. Step 1: Write the proportion equation
   16,438,016 : 21,811,392 = 21,811,392 : x
2. Step 2: Convert to fraction form
   16,438,016/21,811,392 = 21,811,392/x
3. Step 3: Cross multiply
   16,438,016x = 21,811,392 × 21,811,392
4. Step 4: Simplify right side
   16,438,016x = 475,736,820,977,664
5. Step 5: Solve for x
   x = 475,736,820,977,664/16,438,016
6. Step 6: Final answer
   x = 28,941,255.50