Finding the Third Proportional to 6,990,510 and 9,444,600

Step by Step Solution

1. Step 1: Write the proportion equation
   6,990,510 : 9,444,600 = 9,444,600 : x
2. Step 2: Convert to fraction form
   6,990,510/9,444,600 = 9,444,600/x
3. Step 3: Cross multiply
   6,990,510x = 9,444,600 × 9,444,600
4. Step 4: Simplify right side
   6,990,510x = 89,200,469,160,000
5. Step 5: Solve for x
   x = 89,200,469,160,000/6,990,510
6. Step 6: Final answer
   x = 12,760,223.38