Finding the Third Proportional to 664,198 and 1,375,656

Step by Step Solution

1. Step 1: Write the proportion equation
   664,198 : 1,375,656 = 1,375,656 : x
2. Step 2: Convert to fraction form
   664,198/1,375,656 = 1,375,656/x
3. Step 3: Cross multiply
   664,198x = 1,375,656 × 1,375,656
4. Step 4: Simplify right side
   664,198x = 1,892,429,430,336
5. Step 5: Solve for x
   x = 1,892,429,430,336/664,198
6. Step 6: Final answer
   x = 2,849,194.71