Finding the Third Proportional to 581,572 and 1,280,216

Step by Step Solution

1. Step 1: Write the proportion equation
   581,572 : 1,280,216 = 1,280,216 : x
2. Step 2: Convert to fraction form
   581,572/1,280,216 = 1,280,216/x
3. Step 3: Cross multiply
   581,572x = 1,280,216 × 1,280,216
4. Step 4: Simplify right side
   581,572x = 1,638,953,006,656
5. Step 5: Solve for x
   x = 1,638,953,006,656/581,572
6. Step 6: Final answer
   x = 2,818,142.91