Finding the Third Proportional to 4,923,507 and 10,238,406

Step by Step Solution

1. Step 1: Write the proportion equation
   4,923,507 : 10,238,406 = 10,238,406 : x
2. Step 2: Convert to fraction form
   4,923,507/10,238,406 = 10,238,406/x
3. Step 3: Cross multiply
   4,923,507x = 10,238,406 × 10,238,406
4. Step 4: Simplify right side
   4,923,507x = 104,824,957,420,836
5. Step 5: Solve for x
   x = 104,824,957,420,836/4,923,507
6. Step 6: Final answer
   x = 21,290,709.53