Finding the Third Proportional to 1,865,513 and 2,880,728

Step by Step Solution

1. Step 1: Write the proportion equation
   1,865,513 : 2,880,728 = 2,880,728 : x
2. Step 2: Convert to fraction form
   1,865,513/2,880,728 = 2,880,728/x
3. Step 3: Cross multiply
   1,865,513x = 2,880,728 × 2,880,728
4. Step 4: Simplify right side
   1,865,513x = 8,298,593,809,984
5. Step 5: Solve for x
   x = 8,298,593,809,984/1,865,513
6. Step 6: Final answer
   x = 4,448,424.54