Finding the Third Proportional to 8,960,499 and 19,662,821

Step by Step Solution

1. Step 1: Write the proportion equation
   8,960,499 : 19,662,821 = 19,662,821 : x
2. Step 2: Convert to fraction form
   8,960,499/19,662,821 = 19,662,821/x
3. Step 3: Cross multiply
   8,960,499x = 19,662,821 × 19,662,821
4. Step 4: Simplify right side
   8,960,499x = 386,626,529,678,041
5. Step 5: Solve for x
   x = 386,626,529,678,041/8,960,499
6. Step 6: Final answer
   x = 43,147,879.34