Finding the Third Proportional to 142,242 and 190,872

Step by Step Solution

1. Step 1: Write the proportion equation
   142,242 : 190,872 = 190,872 : x
2. Step 2: Convert to fraction form
   142,242/190,872 = 190,872/x
3. Step 3: Cross multiply
   142,242x = 190,872 × 190,872
4. Step 4: Simplify right side
   142,242x = 36,432,120,384
5. Step 5: Solve for x
   x = 36,432,120,384/142,242
6. Step 6: Final answer
   x = 256,127.73