Finding the Third Proportional to 111,692.25 and 243,456.75

Step by Step Solution

1. Step 1: Write the proportion equation
   111,692.25 : 243,456.75 = 243,456.75 : x
2. Step 2: Convert to fraction form
   111,692.25/243,456.75 = 243,456.75/x
3. Step 3: Cross multiply
   111,692.25x = 243,456.75 × 243,456.75
4. Step 4: Simplify right side
   111,692.25x = 59,271,189,120.56
5. Step 5: Solve for x
   x = 59,271,189,120.56/111,692.25
6. Step 6: Final answer
   x = 530,665.19