Finding the Third Proportional to 139,122 and 200,966

Step by Step Solution

1. Step 1: Write the proportion equation
   139,122 : 200,966 = 200,966 : x
2. Step 2: Convert to fraction form
   139,122/200,966 = 200,966/x
3. Step 3: Cross multiply
   139,122x = 200,966 × 200,966
4. Step 4: Simplify right side
   139,122x = 40,387,333,156
5. Step 5: Solve for x
   x = 40,387,333,156/139,122
6. Step 6: Final answer
   x = 290,301.56