Finding the Third Proportional to 2,266,686 and 3,421,854

Step by Step Solution

1. Step 1: Write the proportion equation
   2,266,686 : 3,421,854 = 3,421,854 : x
2. Step 2: Convert to fraction form
   2,266,686/3,421,854 = 3,421,854/x
3. Step 3: Cross multiply
   2,266,686x = 3,421,854 × 3,421,854
4. Step 4: Simplify right side
   2,266,686x = 11,709,084,797,316
5. Step 5: Solve for x
   x = 11,709,084,797,316/2,266,686
6. Step 6: Final answer
   x = 5,165,728.64