Finding the Third Proportional to 34,272 and 54,688

Step by Step Solution

1. Step 1: Write the proportion equation
   34,272 : 54,688 = 54,688 : x
2. Step 2: Convert to fraction form
   34,272/54,688 = 54,688/x
3. Step 3: Cross multiply
   34,272x = 54,688 × 54,688
4. Step 4: Simplify right side
   34,272x = 2,990,777,344
5. Step 5: Solve for x
   x = 2,990,777,344/34,272
6. Step 6: Final answer
   x = 87,265.91