Finding the Third Proportional to 111,720 and 243,514

Step by Step Solution

1. Step 1: Write the proportion equation
   111,720 : 243,514 = 243,514 : x
2. Step 2: Convert to fraction form
   111,720/243,514 = 243,514/x
3. Step 3: Cross multiply
   111,720x = 243,514 × 243,514
4. Step 4: Simplify right side
   111,720x = 59,299,068,196
5. Step 5: Solve for x
   x = 59,299,068,196/111,720
6. Step 6: Final answer
   x = 530,782.92