Finding the Third Proportional to 4,728,310 and 7,488,311

Step by Step Solution

1. Step 1: Write the proportion equation
   4,728,310 : 7,488,311 = 7,488,311 : x
2. Step 2: Convert to fraction form
   4,728,310/7,488,311 = 7,488,311/x
3. Step 3: Cross multiply
   4,728,310x = 7,488,311 × 7,488,311
4. Step 4: Simplify right side
   4,728,310x = 56,074,801,632,721
5. Step 5: Solve for x
   x = 56,074,801,632,721/4,728,310
6. Step 6: Final answer
   x = 11,859,375.05