Finding the Third Proportional to 1,985,921 and 4,242,944

Step by Step Solution

1. Step 1: Write the proportion equation
   1,985,921 : 4,242,944 = 4,242,944 : x
2. Step 2: Convert to fraction form
   1,985,921/4,242,944 = 4,242,944/x
3. Step 3: Cross multiply
   1,985,921x = 4,242,944 × 4,242,944
4. Step 4: Simplify right side
   1,985,921x = 18,002,573,787,136
5. Step 5: Solve for x
   x = 18,002,573,787,136/1,985,921
6. Step 6: Final answer
   x = 9,065,100.67