Finding the Third Proportional to 4,923,518 and 10,238,428

Step by Step Solution

1. Step 1: Write the proportion equation
   4,923,518 : 10,238,428 = 10,238,428 : x
2. Step 2: Convert to fraction form
   4,923,518/10,238,428 = 10,238,428/x
3. Step 3: Cross multiply
   4,923,518x = 10,238,428 × 10,238,428
4. Step 4: Simplify right side
   4,923,518x = 104,825,407,911,184
5. Step 5: Solve for x
   x = 104,825,407,911,184/4,923,518
6. Step 6: Final answer
   x = 21,290,753.46