Finding the Third Proportional to 111,897 and 243,469.50

Step by Step Solution

1. Step 1: Write the proportion equation
   111,897 : 243,469.50 = 243,469.50 : x
2. Step 2: Convert to fraction form
   111,897/243,469.50 = 243,469.50/x
3. Step 3: Cross multiply
   111,897x = 243,469.50 × 243,469.50
4. Step 4: Simplify right side
   111,897x = 59,277,397,430.25
5. Step 5: Solve for x
   x = 59,277,397,430.25/111,897
6. Step 6: Final answer
   x = 529,749.66