Finding the Third Proportional to 4,709,387 and 10,171,642

Step by Step Solution

1. Step 1: Write the proportion equation
   4,709,387 : 10,171,642 = 10,171,642 : x
2. Step 2: Convert to fraction form
   4,709,387/10,171,642 = 10,171,642/x
3. Step 3: Cross multiply
   4,709,387x = 10,171,642 × 10,171,642
4. Step 4: Simplify right side
   4,709,387x = 103,462,300,976,164
5. Step 5: Solve for x
   x = 103,462,300,976,164/4,709,387
6. Step 6: Final answer
   x = 21,969,377.54