Finding the Third Proportional to 111,747 and 243,174

Step by Step Solution

1. Step 1: Write the proportion equation
   111,747 : 243,174 = 243,174 : x
2. Step 2: Convert to fraction form
   111,747/243,174 = 243,174/x
3. Step 3: Cross multiply
   111,747x = 243,174 × 243,174
4. Step 4: Simplify right side
   111,747x = 59,133,594,276
5. Step 5: Solve for x
   x = 59,133,594,276/111,747
6. Step 6: Final answer
   x = 529,173.89