Finding the Third Proportional to 117,188 and 242,680

Step by Step Solution

1. Step 1: Write the proportion equation
   117,188 : 242,680 = 242,680 : x
2. Step 2: Convert to fraction form
   117,188/242,680 = 242,680/x
3. Step 3: Cross multiply
   117,188x = 242,680 × 242,680
4. Step 4: Simplify right side
   117,188x = 58,893,582,400
5. Step 5: Solve for x
   x = 58,893,582,400/117,188
6. Step 6: Final answer
   x = 502,556.43