Finding the Third Proportional to 5,207,382 and 10,668,456

Step by Step Solution

1. Step 1: Write the proportion equation
   5,207,382 : 10,668,456 = 10,668,456 : x
2. Step 2: Convert to fraction form
   5,207,382/10,668,456 = 10,668,456/x
3. Step 3: Cross multiply
   5,207,382x = 10,668,456 × 10,668,456
4. Step 4: Simplify right side
   5,207,382x = 113,815,953,423,936
5. Step 5: Solve for x
   x = 113,815,953,423,936/5,207,382
6. Step 6: Final answer
   x = 21,856,655.31