Finding the Third Proportional to 2,586,400 and 5,585,792

Step by Step Solution

1. Step 1: Write the proportion equation
   2,586,400 : 5,585,792 = 5,585,792 : x
2. Step 2: Convert to fraction form
   2,586,400/5,585,792 = 5,585,792/x
3. Step 3: Cross multiply
   2,586,400x = 5,585,792 × 5,585,792
4. Step 4: Simplify right side
   2,586,400x = 31,201,072,267,264
5. Step 5: Solve for x
   x = 31,201,072,267,264/2,586,400
6. Step 6: Final answer
   x = 12,063,513.87