Finding the Third Proportional to 28,398 and 60,688

Step by Step Solution

1. Step 1: Write the proportion equation
   28,398 : 60,688 = 60,688 : x
2. Step 2: Convert to fraction form
   28,398/60,688 = 60,688/x
3. Step 3: Cross multiply
   28,398x = 60,688 × 60,688
4. Step 4: Simplify right side
   28,398x = 3,683,033,344
5. Step 5: Solve for x
   x = 3,683,033,344/28,398
6. Step 6: Final answer
   x = 129,693.41