Finding the Third Proportional to 3,909,888 and 5,724,864

Step by Step Solution

1. Step 1: Write the proportion equation
   3,909,888 : 5,724,864 = 5,724,864 : x
2. Step 2: Convert to fraction form
   3,909,888/5,724,864 = 5,724,864/x
3. Step 3: Cross multiply
   3,909,888x = 5,724,864 × 5,724,864
4. Step 4: Simplify right side
   3,909,888x = 32,774,067,818,496
5. Step 5: Solve for x
   x = 32,774,067,818,496/3,909,888
6. Step 6: Final answer
   x = 8,382,354.64