Finding the Third Proportional to 623,408 and 1,342,164

Step by Step Solution

1. Step 1: Write the proportion equation
   623,408 : 1,342,164 = 1,342,164 : x
2. Step 2: Convert to fraction form
   623,408/1,342,164 = 1,342,164/x
3. Step 3: Cross multiply
   623,408x = 1,342,164 × 1,342,164
4. Step 4: Simplify right side
   623,408x = 1,801,404,202,896
5. Step 5: Solve for x
   x = 1,801,404,202,896/623,408
6. Step 6: Final answer
   x = 2,889,607.13