Finding the Third Proportional to 2,418,318 and 5,278,716

Step by Step Solution

1. Step 1: Write the proportion equation
   2,418,318 : 5,278,716 = 5,278,716 : x
2. Step 2: Convert to fraction form
   2,418,318/5,278,716 = 5,278,716/x
3. Step 3: Cross multiply
   2,418,318x = 5,278,716 × 5,278,716
4. Step 4: Simplify right side
   2,418,318x = 27,864,842,608,656
5. Step 5: Solve for x
   x = 27,864,842,608,656/2,418,318
6. Step 6: Final answer
   x = 11,522,406.32