Finding the Third Proportional to 939,742 and 1,431,643

Step by Step Solution

1. Step 1: Write the proportion equation
   939,742 : 1,431,643 = 1,431,643 : x
2. Step 2: Convert to fraction form
   939,742/1,431,643 = 1,431,643/x
3. Step 3: Cross multiply
   939,742x = 1,431,643 × 1,431,643
4. Step 4: Simplify right side
   939,742x = 2,049,601,679,449
5. Step 5: Solve for x
   x = 2,049,601,679,449/939,742
6. Step 6: Final answer
   x = 2,181,025.94