Finding the Third Proportional to 64,080 and 139,792

Step by Step Solution

1. Step 1: Write the proportion equation
   64,080 : 139,792 = 139,792 : x
2. Step 2: Convert to fraction form
   64,080/139,792 = 139,792/x
3. Step 3: Cross multiply
   64,080x = 139,792 × 139,792
4. Step 4: Simplify right side
   64,080x = 19,541,803,264
5. Step 5: Solve for x
   x = 19,541,803,264/64,080
6. Step 6: Final answer
   x = 304,959.48