Finding the Third Proportional to 3,478,456 and 5,201,691

Step by Step Solution

1. Step 1: Write the proportion equation
   3,478,456 : 5,201,691 = 5,201,691 : x
2. Step 2: Convert to fraction form
   3,478,456/5,201,691 = 5,201,691/x
3. Step 3: Cross multiply
   3,478,456x = 5,201,691 × 5,201,691
4. Step 4: Simplify right side
   3,478,456x = 27,057,589,259,481
5. Step 5: Solve for x
   x = 27,057,589,259,481/3,478,456
6. Step 6: Final answer
   x = 7,778,620.53