Finding the Third Proportional to 2,436,638 and 5,359,276

Step by Step Solution

1. Step 1: Write the proportion equation
   2,436,638 : 5,359,276 = 5,359,276 : x
2. Step 2: Convert to fraction form
   2,436,638/5,359,276 = 5,359,276/x
3. Step 3: Cross multiply
   2,436,638x = 5,359,276 × 5,359,276
4. Step 4: Simplify right side
   2,436,638x = 28,721,839,244,176
5. Step 5: Solve for x
   x = 28,721,839,244,176/2,436,638
6. Step 6: Final answer
   x = 11,787,487.20