Finding the Third Proportional to 111,498 and 238,260

Step by Step Solution

1. Step 1: Write the proportion equation
   111,498 : 238,260 = 238,260 : x
2. Step 2: Convert to fraction form
   111,498/238,260 = 238,260/x
3. Step 3: Cross multiply
   111,498x = 238,260 × 238,260
4. Step 4: Simplify right side
   111,498x = 56,767,827,600
5. Step 5: Solve for x
   x = 56,767,827,600/111,498
6. Step 6: Final answer
   x = 509,137.63