Finding the Third Proportional to 12,879,216 and 17,429,256

Step by Step Solution

1. Step 1: Write the proportion equation
   12,879,216 : 17,429,256 = 17,429,256 : x
2. Step 2: Convert to fraction form
   12,879,216/17,429,256 = 17,429,256/x
3. Step 3: Cross multiply
   12,879,216x = 17,429,256 × 17,429,256
4. Step 4: Simplify right side
   12,879,216x = 303,778,964,713,536
5. Step 5: Solve for x
   x = 303,778,964,713,536/12,879,216
6. Step 6: Final answer
   x = 23,586,759.06