Finding the Third Proportional to 12,515,978 and 25,991,184

Step by Step Solution

1. Step 1: Write the proportion equation
   12,515,978 : 25,991,184 = 25,991,184 : x
2. Step 2: Convert to fraction form
   12,515,978/25,991,184 = 25,991,184/x
3. Step 3: Cross multiply
   12,515,978x = 25,991,184 × 25,991,184
4. Step 4: Simplify right side
   12,515,978x = 675,541,645,721,856
5. Step 5: Solve for x
   x = 675,541,645,721,856/12,515,978
6. Step 6: Final answer
   x = 53,974,339.50