Finding the Third Proportional to 113,620 and 238,660

Step by Step Solution

1. Step 1: Write the proportion equation
   113,620 : 238,660 = 238,660 : x
2. Step 2: Convert to fraction form
   113,620/238,660 = 238,660/x
3. Step 3: Cross multiply
   113,620x = 238,660 × 238,660
4. Step 4: Simplify right side
   113,620x = 56,958,595,600
5. Step 5: Solve for x
   x = 56,958,595,600/113,620
6. Step 6: Final answer
   x = 501,307.83