Finding the Third Proportional to 111,937 and 155,145

Step by Step Solution

1. Step 1: Write the proportion equation
   111,937 : 155,145 = 155,145 : x
2. Step 2: Convert to fraction form
   111,937/155,145 = 155,145/x
3. Step 3: Cross multiply
   111,937x = 155,145 × 155,145
4. Step 4: Simplify right side
   111,937x = 24,069,971,025
5. Step 5: Solve for x
   x = 24,069,971,025/111,937
6. Step 6: Final answer
   x = 215,031.41