Finding the Third Proportional to 5,387,544 and 8,364,630

Step by Step Solution

1. Step 1: Write the proportion equation
   5,387,544 : 8,364,630 = 8,364,630 : x
2. Step 2: Convert to fraction form
   5,387,544/8,364,630 = 8,364,630/x
3. Step 3: Cross multiply
   5,387,544x = 8,364,630 × 8,364,630
4. Step 4: Simplify right side
   5,387,544x = 69,967,035,036,900
5. Step 5: Solve for x
   x = 69,967,035,036,900/5,387,544
6. Step 6: Final answer
   x = 12,986,814.59