Finding the Third Proportional to 28,688 and 61,760

Step by Step Solution

1. Step 1: Write the proportion equation
   28,688 : 61,760 = 61,760 : x
2. Step 2: Convert to fraction form
   28,688/61,760 = 61,760/x
3. Step 3: Cross multiply
   28,688x = 61,760 × 61,760
4. Step 4: Simplify right side
   28,688x = 3,814,297,600
5. Step 5: Solve for x
   x = 3,814,297,600/28,688
6. Step 6: Final answer
   x = 132,957.95