Finding the Third Proportional to 2,491,965 and 5,434,209

Step by Step Solution

1. Step 1: Write the proportion equation
   2,491,965 : 5,434,209 = 5,434,209 : x
2. Step 2: Convert to fraction form
   2,491,965/5,434,209 = 5,434,209/x
3. Step 3: Cross multiply
   2,491,965x = 5,434,209 × 5,434,209
4. Step 4: Simplify right side
   2,491,965x = 29,530,627,455,681
5. Step 5: Solve for x
   x = 29,530,627,455,681/2,491,965
6. Step 6: Final answer
   x = 11,850,337.97