Finding the Third Proportional to 11,945,474 and 18,885,519

Step by Step Solution

1. Step 1: Write the proportion equation
   11,945,474 : 18,885,519 = 18,885,519 : x
2. Step 2: Convert to fraction form
   11,945,474/18,885,519 = 18,885,519/x
3. Step 3: Cross multiply
   11,945,474x = 18,885,519 × 18,885,519
4. Step 4: Simplify right side
   11,945,474x = 356,662,827,899,361
5. Step 5: Solve for x
   x = 356,662,827,899,361/11,945,474
6. Step 6: Final answer
   x = 29,857,570.15