Finding the Third Proportional to 111,148 and 238,172

Step by Step Solution

1. Step 1: Write the proportion equation
   111,148 : 238,172 = 238,172 : x
2. Step 2: Convert to fraction form
   111,148/238,172 = 238,172/x
3. Step 3: Cross multiply
   111,148x = 238,172 × 238,172
4. Step 4: Simplify right side
   111,148x = 56,725,901,584
5. Step 5: Solve for x
   x = 56,725,901,584/111,148
6. Step 6: Final answer
   x = 510,363.67