Finding the Third Proportional to 5,911,544 and 8,909,612

Step by Step Solution

1. Step 1: Write the proportion equation
   5,911,544 : 8,909,612 = 8,909,612 : x
2. Step 2: Convert to fraction form
   5,911,544/8,909,612 = 8,909,612/x
3. Step 3: Cross multiply
   5,911,544x = 8,909,612 × 8,909,612
4. Step 4: Simplify right side
   5,911,544x = 79,381,185,990,544
5. Step 5: Solve for x
   x = 79,381,185,990,544/5,911,544
6. Step 6: Final answer
   x = 13,428,164.62