Finding the Third Proportional to 111,570 and 245,253

Step by Step Solution

1. Step 1: Write the proportion equation
   111,570 : 245,253 = 245,253 : x
2. Step 2: Convert to fraction form
   111,570/245,253 = 245,253/x
3. Step 3: Cross multiply
   111,570x = 245,253 × 245,253
4. Step 4: Simplify right side
   111,570x = 60,149,034,009
5. Step 5: Solve for x
   x = 60,149,034,009/111,570
6. Step 6: Final answer
   x = 539,114.76