Finding the Third Proportional to 123,356 and 195,138

Step by Step Solution

1. Step 1: Write the proportion equation
   123,356 : 195,138 = 195,138 : x
2. Step 2: Convert to fraction form
   123,356/195,138 = 195,138/x
3. Step 3: Cross multiply
   123,356x = 195,138 × 195,138
4. Step 4: Simplify right side
   123,356x = 38,078,839,044
5. Step 5: Solve for x
   x = 38,078,839,044/123,356
6. Step 6: Final answer
   x = 308,690.61