Finding the Third Proportional to 3,479,399 and 7,497,660

Step by Step Solution

1. Step 1: Write the proportion equation
   3,479,399 : 7,497,660 = 7,497,660 : x
2. Step 2: Convert to fraction form
   3,479,399/7,497,660 = 7,497,660/x
3. Step 3: Cross multiply
   3,479,399x = 7,497,660 × 7,497,660
4. Step 4: Simplify right side
   3,479,399x = 56,214,905,475,600
5. Step 5: Solve for x
   x = 56,214,905,475,600/3,479,399
6. Step 6: Final answer
   x = 16,156,498.72