Finding the Third Proportional to 12,782,016 and 17,978,754

Step by Step Solution

1. Step 1: Write the proportion equation
   12,782,016 : 17,978,754 = 17,978,754 : x
2. Step 2: Convert to fraction form
   12,782,016/17,978,754 = 17,978,754/x
3. Step 3: Cross multiply
   12,782,016x = 17,978,754 × 17,978,754
4. Step 4: Simplify right side
   12,782,016x = 323,235,595,392,516
5. Step 5: Solve for x
   x = 323,235,595,392,516/12,782,016
6. Step 6: Final answer
   x = 25,288,310.97