Finding the Third Proportional to 6,990,405 and 9,444,472

Step by Step Solution

1. Step 1: Write the proportion equation
   6,990,405 : 9,444,472 = 9,444,472 : x
2. Step 2: Convert to fraction form
   6,990,405/9,444,472 = 9,444,472/x
3. Step 3: Cross multiply
   6,990,405x = 9,444,472 × 9,444,472
4. Step 4: Simplify right side
   6,990,405x = 89,198,051,358,784
5. Step 5: Solve for x
   x = 89,198,051,358,784/6,990,405
6. Step 6: Final answer
   x = 12,760,069.17