Finding the Third Proportional to 5,387,742 and 8,364,960

Step by Step Solution

1. Step 1: Write the proportion equation
   5,387,742 : 8,364,960 = 8,364,960 : x
2. Step 2: Convert to fraction form
   5,387,742/8,364,960 = 8,364,960/x
3. Step 3: Cross multiply
   5,387,742x = 8,364,960 × 8,364,960
4. Step 4: Simplify right side
   5,387,742x = 69,972,555,801,600
5. Step 5: Solve for x
   x = 69,972,555,801,600/5,387,742
6. Step 6: Final answer
   x = 12,987,362.02