Finding the Third Proportional to 117,243 and 238,632

Step by Step Solution

1. Step 1: Write the proportion equation
   117,243 : 238,632 = 238,632 : x
2. Step 2: Convert to fraction form
   117,243/238,632 = 238,632/x
3. Step 3: Cross multiply
   117,243x = 238,632 × 238,632
4. Step 4: Simplify right side
   117,243x = 56,945,231,424
5. Step 5: Solve for x
   x = 56,945,231,424/117,243
6. Step 6: Final answer
   x = 485,702.61