Finding the Third Proportional to 4,066,770 and 5,421,723

Step by Step Solution

1. Step 1: Write the proportion equation
   4,066,770 : 5,421,723 = 5,421,723 : x
2. Step 2: Convert to fraction form
   4,066,770/5,421,723 = 5,421,723/x
3. Step 3: Cross multiply
   4,066,770x = 5,421,723 × 5,421,723
4. Step 4: Simplify right side
   4,066,770x = 29,395,080,288,729
5. Step 5: Solve for x
   x = 29,395,080,288,729/4,066,770
6. Step 6: Final answer
   x = 7,228,114.77