Finding the Third Proportional to 111,145 and 242,702

Step by Step Solution

1. Step 1: Write the proportion equation
   111,145 : 242,702 = 242,702 : x
2. Step 2: Convert to fraction form
   111,145/242,702 = 242,702/x
3. Step 3: Cross multiply
   111,145x = 242,702 × 242,702
4. Step 4: Simplify right side
   111,145x = 58,904,260,804
5. Step 5: Solve for x
   x = 58,904,260,804/111,145
6. Step 6: Final answer
   x = 529,976.70