Finding the Third Proportional to 64,894 and 139,494

Step by Step Solution

1. Step 1: Write the proportion equation
   64,894 : 139,494 = 139,494 : x
2. Step 2: Convert to fraction form
   64,894/139,494 = 139,494/x
3. Step 3: Cross multiply
   64,894x = 139,494 × 139,494
4. Step 4: Simplify right side
   64,894x = 19,458,576,036
5. Step 5: Solve for x
   x = 19,458,576,036/64,894
6. Step 6: Final answer
   x = 299,851.70