Finding the Third Proportional to 906,190 and 1,439,638

Step by Step Solution

1. Step 1: Write the proportion equation
   906,190 : 1,439,638 = 1,439,638 : x
2. Step 2: Convert to fraction form
   906,190/1,439,638 = 1,439,638/x
3. Step 3: Cross multiply
   906,190x = 1,439,638 × 1,439,638
4. Step 4: Simplify right side
   906,190x = 2,072,557,571,044
5. Step 5: Solve for x
   x = 2,072,557,571,044/906,190
6. Step 6: Final answer
   x = 2,287,111.50