Finding the Third Proportional to 3,715,891 and 5,430,456

Step by Step Solution

1. Step 1: Write the proportion equation
   3,715,891 : 5,430,456 = 5,430,456 : x
2. Step 2: Convert to fraction form
   3,715,891/5,430,456 = 5,430,456/x
3. Step 3: Cross multiply
   3,715,891x = 5,430,456 × 5,430,456
4. Step 4: Simplify right side
   3,715,891x = 29,489,852,367,936
5. Step 5: Solve for x
   x = 29,489,852,367,936/3,715,891
6. Step 6: Final answer
   x = 7,936,145.70