Finding the Third Proportional to 4,709,388 and 10,171,644

Step by Step Solution

1. Step 1: Write the proportion equation
   4,709,388 : 10,171,644 = 10,171,644 : x
2. Step 2: Convert to fraction form
   4,709,388/10,171,644 = 10,171,644/x
3. Step 3: Cross multiply
   4,709,388x = 10,171,644 × 10,171,644
4. Step 4: Simplify right side
   4,709,388x = 103,462,341,662,736
5. Step 5: Solve for x
   x = 103,462,341,662,736/4,709,388
6. Step 6: Final answer
   x = 21,969,381.51