Finding the Third Proportional to 4,066,768 and 5,421,720

Step by Step Solution

1. Step 1: Write the proportion equation
   4,066,768 : 5,421,720 = 5,421,720 : x
2. Step 2: Convert to fraction form
   4,066,768/5,421,720 = 5,421,720/x
3. Step 3: Cross multiply
   4,066,768x = 5,421,720 × 5,421,720
4. Step 4: Simplify right side
   4,066,768x = 29,395,047,758,400
5. Step 5: Solve for x
   x = 29,395,047,758,400/4,066,768
6. Step 6: Final answer
   x = 7,228,110.32