Finding the Third Proportional to 12,782,045 and 17,978,799

Step by Step Solution

1. Step 1: Write the proportion equation
   12,782,045 : 17,978,799 = 17,978,799 : x
2. Step 2: Convert to fraction form
   12,782,045/17,978,799 = 17,978,799/x
3. Step 3: Cross multiply
   12,782,045x = 17,978,799 × 17,978,799
4. Step 4: Simplify right side
   12,782,045x = 323,237,213,482,401
5. Step 5: Solve for x
   x = 323,237,213,482,401/12,782,045
6. Step 6: Final answer
   x = 25,288,380.18