Finding the Third Proportional to 4,066,128 and 5,420,760

Step by Step Solution

1. Step 1: Write the proportion equation
   4,066,128 : 5,420,760 = 5,420,760 : x
2. Step 2: Convert to fraction form
   4,066,128/5,420,760 = 5,420,760/x
3. Step 3: Cross multiply
   4,066,128x = 5,420,760 × 5,420,760
4. Step 4: Simplify right side
   4,066,128x = 29,384,638,977,600
5. Step 5: Solve for x
   x = 29,384,638,977,600/4,066,128
6. Step 6: Final answer
   x = 7,226,688.14