Finding the Third Proportional to 8,172,879 and 17,782,311

Step by Step Solution

1. Step 1: Write the proportion equation
   8,172,879 : 17,782,311 = 17,782,311 : x
2. Step 2: Convert to fraction form
   8,172,879/17,782,311 = 17,782,311/x
3. Step 3: Cross multiply
   8,172,879x = 17,782,311 × 17,782,311
4. Step 4: Simplify right side
   8,172,879x = 316,210,584,500,721
5. Step 5: Solve for x
   x = 316,210,584,500,721/8,172,879
6. Step 6: Final answer
   x = 38,690,231.99