Finding the Third Proportional to 4,256,216 and 9,339,488

Step by Step Solution

1. Step 1: Write the proportion equation
   4,256,216 : 9,339,488 = 9,339,488 : x
2. Step 2: Convert to fraction form
   4,256,216/9,339,488 = 9,339,488/x
3. Step 3: Cross multiply
   4,256,216x = 9,339,488 × 9,339,488
4. Step 4: Simplify right side
   4,256,216x = 87,226,036,102,144
5. Step 5: Solve for x
   x = 87,226,036,102,144/4,256,216
6. Step 6: Final answer
   x = 20,493,799.21