Finding the Third Proportional to 2,142,866 and 2,910,243

Step by Step Solution

1. Step 1: Write the proportion equation
   2,142,866 : 2,910,243 = 2,910,243 : x
2. Step 2: Convert to fraction form
   2,142,866/2,910,243 = 2,910,243/x
3. Step 3: Cross multiply
   2,142,866x = 2,910,243 × 2,910,243
4. Step 4: Simplify right side
   2,142,866x = 8,469,514,319,049
5. Step 5: Solve for x
   x = 8,469,514,319,049/2,142,866
6. Step 6: Final answer
   x = 3,952,423.68