Finding the Third Proportional to 12,862,235 and 26,782,978

Step by Step Solution

1. Step 1: Write the proportion equation
   12,862,235 : 26,782,978 = 26,782,978 : x
2. Step 2: Convert to fraction form
   12,862,235/26,782,978 = 26,782,978/x
3. Step 3: Cross multiply
   12,862,235x = 26,782,978 × 26,782,978
4. Step 4: Simplify right side
   12,862,235x = 717,327,910,548,484
5. Step 5: Solve for x
   x = 717,327,910,548,484/12,862,235
6. Step 6: Final answer
   x = 55,770,082.77