Finding the Third Proportional to 111,936 and 155,143

Step by Step Solution

1. Step 1: Write the proportion equation
   111,936 : 155,143 = 155,143 : x
2. Step 2: Convert to fraction form
   111,936/155,143 = 155,143/x
3. Step 3: Cross multiply
   111,936x = 155,143 × 155,143
4. Step 4: Simplify right side
   111,936x = 24,069,350,449
5. Step 5: Solve for x
   x = 24,069,350,449/111,936
6. Step 6: Final answer
   x = 215,027.79