Finding the Third Proportional to 4,709,400 and 10,171,665

Step by Step Solution

1. Step 1: Write the proportion equation
   4,709,400 : 10,171,665 = 10,171,665 : x
2. Step 2: Convert to fraction form
   4,709,400/10,171,665 = 10,171,665/x
3. Step 3: Cross multiply
   4,709,400x = 10,171,665 × 10,171,665
4. Step 4: Simplify right side
   4,709,400x = 103,462,768,872,225
5. Step 5: Solve for x
   x = 103,462,768,872,225/4,709,400
6. Step 6: Final answer
   x = 21,969,416.25