Finding the Third Proportional to 12,987,707 and 28,236,059

Step by Step Solution

1. Step 1: Write the proportion equation
   12,987,707 : 28,236,059 = 28,236,059 : x
2. Step 2: Convert to fraction form
   12,987,707/28,236,059 = 28,236,059/x
3. Step 3: Cross multiply
   12,987,707x = 28,236,059 × 28,236,059
4. Step 4: Simplify right side
   12,987,707x = 797,275,027,851,481
5. Step 5: Solve for x
   x = 797,275,027,851,481/12,987,707
6. Step 6: Final answer
   x = 61,386,896.69