Finding the Third Proportional to 6,666,638 and 9,439,436

Step by Step Solution

1. Step 1: Write the proportion equation
   6,666,638 : 9,439,436 = 9,439,436 : x
2. Step 2: Convert to fraction form
   6,666,638/9,439,436 = 9,439,436/x
3. Step 3: Cross multiply
   6,666,638x = 9,439,436 × 9,439,436
4. Step 4: Simplify right side
   6,666,638x = 89,102,951,998,096
5. Step 5: Solve for x
   x = 89,102,951,998,096/6,666,638
6. Step 6: Final answer
   x = 13,365,500.27