Finding the Third Proportional to 1,177,980 and 2,564,540

Step by Step Solution

1. Step 1: Write the proportion equation
   1,177,980 : 2,564,540 = 2,564,540 : x
2. Step 2: Convert to fraction form
   1,177,980/2,564,540 = 2,564,540/x
3. Step 3: Cross multiply
   1,177,980x = 2,564,540 × 2,564,540
4. Step 4: Simplify right side
   1,177,980x = 6,576,865,411,600
5. Step 5: Solve for x
   x = 6,576,865,411,600/1,177,980
6. Step 6: Final answer
   x = 5,583,172.39