Finding the Third Proportional to 158,605 and 242,931

Step by Step Solution

1. Step 1: Write the proportion equation
   158,605 : 242,931 = 242,931 : x
2. Step 2: Convert to fraction form
   158,605/242,931 = 242,931/x
3. Step 3: Cross multiply
   158,605x = 242,931 × 242,931
4. Step 4: Simplify right side
   158,605x = 59,015,470,761
5. Step 5: Solve for x
   x = 59,015,470,761/158,605
6. Step 6: Final answer
   x = 372,090.86