Finding the Third Proportional to 5,539,868 and 8,509,914

Step by Step Solution

1. Step 1: Write the proportion equation
   5,539,868 : 8,509,914 = 8,509,914 : x
2. Step 2: Convert to fraction form
   5,539,868/8,509,914 = 8,509,914/x
3. Step 3: Cross multiply
   5,539,868x = 8,509,914 × 8,509,914
4. Step 4: Simplify right side
   5,539,868x = 72,418,636,287,396
5. Step 5: Solve for x
   x = 72,418,636,287,396/5,539,868
6. Step 6: Final answer
   x = 13,072,267.48