Finding the Third Proportional to 111,899 and 243,474

Step by Step Solution

1. Step 1: Write the proportion equation
   111,899 : 243,474 = 243,474 : x
2. Step 2: Convert to fraction form
   111,899/243,474 = 243,474/x
3. Step 3: Cross multiply
   111,899x = 243,474 × 243,474
4. Step 4: Simplify right side
   111,899x = 59,279,588,676
5. Step 5: Solve for x
   x = 59,279,588,676/111,899
6. Step 6: Final answer
   x = 529,759.77