Finding the Third Proportional to 665,640 and 1,436,248

Step by Step Solution

1. Step 1: Write the proportion equation
   665,640 : 1,436,248 = 1,436,248 : x
2. Step 2: Convert to fraction form
   665,640/1,436,248 = 1,436,248/x
3. Step 3: Cross multiply
   665,640x = 1,436,248 × 1,436,248
4. Step 4: Simplify right side
   665,640x = 2,062,808,317,504
5. Step 5: Solve for x
   x = 2,062,808,317,504/665,640
6. Step 6: Final answer
   x = 3,098,984.91