Finding the Third Proportional to 939,720 and 1,431,612

Step by Step Solution

1. Step 1: Write the proportion equation
   939,720 : 1,431,612 = 1,431,612 : x
2. Step 2: Convert to fraction form
   939,720/1,431,612 = 1,431,612/x
3. Step 3: Cross multiply
   939,720x = 1,431,612 × 1,431,612
4. Step 4: Simplify right side
   939,720x = 2,049,512,918,544
5. Step 5: Solve for x
   x = 2,049,512,918,544/939,720
6. Step 6: Final answer
   x = 2,180,982.55