Finding the Third Proportional to 139,860 and 213,942

Step by Step Solution

1. Step 1: Write the proportion equation
   139,860 : 213,942 = 213,942 : x
2. Step 2: Convert to fraction form
   139,860/213,942 = 213,942/x
3. Step 3: Cross multiply
   139,860x = 213,942 × 213,942
4. Step 4: Simplify right side
   139,860x = 45,771,179,364
5. Step 5: Solve for x
   x = 45,771,179,364/139,860
6. Step 6: Final answer
   x = 327,264.26