Finding the Third Proportional to 4,200,892 and 8,555,872

Step by Step Solution

1. Step 1: Write the proportion equation
   4,200,892 : 8,555,872 = 8,555,872 : x
2. Step 2: Convert to fraction form
   4,200,892/8,555,872 = 8,555,872/x
3. Step 3: Cross multiply
   4,200,892x = 8,555,872 × 8,555,872
4. Step 4: Simplify right side
   4,200,892x = 73,202,945,680,384
5. Step 5: Solve for x
   x = 73,202,945,680,384/4,200,892
6. Step 6: Final answer
   x = 17,425,571.92