Finding the Third Proportional to 123,243 and 190,299

Step by Step Solution

1. Step 1: Write the proportion equation
   123,243 : 190,299 = 190,299 : x
2. Step 2: Convert to fraction form
   123,243/190,299 = 190,299/x
3. Step 3: Cross multiply
   123,243x = 190,299 × 190,299
4. Step 4: Simplify right side
   123,243x = 36,213,709,401
5. Step 5: Solve for x
   x = 36,213,709,401/123,243
6. Step 6: Final answer
   x = 293,839.89