Finding the Third Proportional to 21,320,856 and 30,386,556

Step by Step Solution

1. Step 1: Write the proportion equation
   21,320,856 : 30,386,556 = 30,386,556 : x
2. Step 2: Convert to fraction form
   21,320,856/30,386,556 = 30,386,556/x
3. Step 3: Cross multiply
   21,320,856x = 30,386,556 × 30,386,556
4. Step 4: Simplify right side
   21,320,856x = 923,342,785,541,136
5. Step 5: Solve for x
   x = 923,342,785,541,136/21,320,856
6. Step 6: Final answer
   x = 43,307,022.27