Finding the Third Proportional to 12,688 and 19,562

Step by Step Solution

1. Step 1: Write the proportion equation
   12,688 : 19,562 = 19,562 : x
2. Step 2: Convert to fraction form
   12,688/19,562 = 19,562/x
3. Step 3: Cross multiply
   12,688x = 19,562 × 19,562
4. Step 4: Simplify right side
   12,688x = 382,671,844
5. Step 5: Solve for x
   x = 382,671,844/12,688
6. Step 6: Final answer
   x = 30,160.14