Finding the Third Proportional to 3,923,074 and 8,447,300

Step by Step Solution

1. Step 1: Write the proportion equation
   3,923,074 : 8,447,300 = 8,447,300 : x
2. Step 2: Convert to fraction form
   3,923,074/8,447,300 = 8,447,300/x
3. Step 3: Cross multiply
   3,923,074x = 8,447,300 × 8,447,300
4. Step 4: Simplify right side
   3,923,074x = 71,356,877,290,000
5. Step 5: Solve for x
   x = 71,356,877,290,000/3,923,074
6. Step 6: Final answer
   x = 18,189,021.49