Finding the Third Proportional to 609,638 and 1,339,948

Step by Step Solution

1. Step 1: Write the proportion equation
   609,638 : 1,339,948 = 1,339,948 : x
2. Step 2: Convert to fraction form
   609,638/1,339,948 = 1,339,948/x
3. Step 3: Cross multiply
   609,638x = 1,339,948 × 1,339,948
4. Step 4: Simplify right side
   609,638x = 1,795,460,642,704
5. Step 5: Solve for x
   x = 1,795,460,642,704/609,638
6. Step 6: Final answer
   x = 2,945,125.87