Finding the Third Proportional to 111,581 and 245,275

Step by Step Solution

1. Step 1: Write the proportion equation
   111,581 : 245,275 = 245,275 : x
2. Step 2: Convert to fraction form
   111,581/245,275 = 245,275/x
3. Step 3: Cross multiply
   111,581x = 245,275 × 245,275
4. Step 4: Simplify right side
   111,581x = 60,159,825,625
5. Step 5: Solve for x
   x = 60,159,825,625/111,581
6. Step 6: Final answer
   x = 539,158.33