Finding the Third Proportional to 664,178 and 1,375,616

Step by Step Solution

1. Step 1: Write the proportion equation
   664,178 : 1,375,616 = 1,375,616 : x
2. Step 2: Convert to fraction form
   664,178/1,375,616 = 1,375,616/x
3. Step 3: Cross multiply
   664,178x = 1,375,616 × 1,375,616
4. Step 4: Simplify right side
   664,178x = 1,892,319,379,456
5. Step 5: Solve for x
   x = 1,892,319,379,456/664,178
6. Step 6: Final answer
   x = 2,849,114.81