Finding the Third Proportional to 3,650,129 and 8,449,812

Step by Step Solution

1. Step 1: Write the proportion equation
   3,650,129 : 8,449,812 = 8,449,812 : x
2. Step 2: Convert to fraction form
   3,650,129/8,449,812 = 8,449,812/x
3. Step 3: Cross multiply
   3,650,129x = 8,449,812 × 8,449,812
4. Step 4: Simplify right side
   3,650,129x = 71,399,322,835,344
5. Step 5: Solve for x
   x = 71,399,322,835,344/3,650,129
6. Step 6: Final answer
   x = 19,560,766.99