Finding the Third Proportional to 3,405,969 and 5,676,388

Step by Step Solution

1. Step 1: Write the proportion equation
   3,405,969 : 5,676,388 = 5,676,388 : x
2. Step 2: Convert to fraction form
   3,405,969/5,676,388 = 5,676,388/x
3. Step 3: Cross multiply
   3,405,969x = 5,676,388 × 5,676,388
4. Step 4: Simplify right side
   3,405,969x = 32,221,380,726,544
5. Step 5: Solve for x
   x = 32,221,380,726,544/3,405,969
6. Step 6: Final answer
   x = 9,460,268.35