Finding the Third Proportional to 3,478,997 and 5,308,478

Step by Step Solution

1. Step 1: Write the proportion equation
   3,478,997 : 5,308,478 = 5,308,478 : x
2. Step 2: Convert to fraction form
   3,478,997/5,308,478 = 5,308,478/x
3. Step 3: Cross multiply
   3,478,997x = 5,308,478 × 5,308,478
4. Step 4: Simplify right side
   3,478,997x = 28,179,938,676,484
5. Step 5: Solve for x
   x = 28,179,938,676,484/3,478,997
6. Step 6: Final answer
   x = 8,100,018.10