Finding the Third Proportional to 12,783 and 19,587

Step by Step Solution

1. Step 1: Write the proportion equation
   12,783 : 19,587 = 19,587 : x
2. Step 2: Convert to fraction form
   12,783/19,587 = 19,587/x
3. Step 3: Cross multiply
   12,783x = 19,587 × 19,587
4. Step 4: Simplify right side
   12,783x = 383,650,569
5. Step 5: Solve for x
   x = 383,650,569/12,783
6. Step 6: Final answer
   x = 30,012.56