Finding the Third Proportional to 11,987,424 and 19,066,320

Step by Step Solution

1. Step 1: Write the proportion equation
   11,987,424 : 19,066,320 = 19,066,320 : x
2. Step 2: Convert to fraction form
   11,987,424/19,066,320 = 19,066,320/x
3. Step 3: Cross multiply
   11,987,424x = 19,066,320 × 19,066,320
4. Step 4: Simplify right side
   11,987,424x = 363,524,558,342,400
5. Step 5: Solve for x
   x = 363,524,558,342,400/11,987,424
6. Step 6: Final answer
   x = 30,325,494.31