Finding the Third Proportional to 111,771 and 243,270

Step by Step Solution

1. Step 1: Write the proportion equation
   111,771 : 243,270 = 243,270 : x
2. Step 2: Convert to fraction form
   111,771/243,270 = 243,270/x
3. Step 3: Cross multiply
   111,771x = 243,270 × 243,270
4. Step 4: Simplify right side
   111,771x = 59,180,292,900
5. Step 5: Solve for x
   x = 59,180,292,900/111,771
6. Step 6: Final answer
   x = 529,478.07