Finding the Third Proportional to 5,978,271 and 8,388,696

Step by Step Solution

1. Step 1: Write the proportion equation
   5,978,271 : 8,388,696 = 8,388,696 : x
2. Step 2: Convert to fraction form
   5,978,271/8,388,696 = 8,388,696/x
3. Step 3: Cross multiply
   5,978,271x = 8,388,696 × 8,388,696
4. Step 4: Simplify right side
   5,978,271x = 70,370,220,580,416
5. Step 5: Solve for x
   x = 70,370,220,580,416/5,978,271
6. Step 6: Final answer
   x = 11,770,998.77