Finding the Third Proportional to 3,909,905 and 5,724,889

Step by Step Solution

1. Step 1: Write the proportion equation
   3,909,905 : 5,724,889 = 5,724,889 : x
2. Step 2: Convert to fraction form
   3,909,905/5,724,889 = 5,724,889/x
3. Step 3: Cross multiply
   3,909,905x = 5,724,889 × 5,724,889
4. Step 4: Simplify right side
   3,909,905x = 32,774,354,062,321
5. Step 5: Solve for x
   x = 32,774,354,062,321/3,909,905
6. Step 6: Final answer
   x = 8,382,391.40