Finding the Third Proportional to 111,218 and 242,020

Step by Step Solution

1. Step 1: Write the proportion equation
   111,218 : 242,020 = 242,020 : x
2. Step 2: Convert to fraction form
   111,218/242,020 = 242,020/x
3. Step 3: Cross multiply
   111,218x = 242,020 × 242,020
4. Step 4: Simplify right side
   111,218x = 58,573,680,400
5. Step 5: Solve for x
   x = 58,573,680,400/111,218
6. Step 6: Final answer
   x = 526,656.48