Finding the Third Proportional to 64,436 and 139,942

Step by Step Solution

1. Step 1: Write the proportion equation
   64,436 : 139,942 = 139,942 : x
2. Step 2: Convert to fraction form
   64,436/139,942 = 139,942/x
3. Step 3: Cross multiply
   64,436x = 139,942 × 139,942
4. Step 4: Simplify right side
   64,436x = 19,583,763,364
5. Step 5: Solve for x
   x = 19,583,763,364/64,436
6. Step 6: Final answer
   x = 303,925.81