Finding the Third Proportional to 1,993,621 and 4,248,218

Step by Step Solution

1. Step 1: Write the proportion equation
   1,993,621 : 4,248,218 = 4,248,218 : x
2. Step 2: Convert to fraction form
   1,993,621/4,248,218 = 4,248,218/x
3. Step 3: Cross multiply
   1,993,621x = 4,248,218 × 4,248,218
4. Step 4: Simplify right side
   1,993,621x = 18,047,356,175,524
5. Step 5: Solve for x
   x = 18,047,356,175,524/1,993,621
6. Step 6: Final answer
   x = 9,052,551.20