Finding the Third Proportional to 111,572 and 245,258

Step by Step Solution

1. Step 1: Write the proportion equation
   111,572 : 245,258 = 245,258 : x
2. Step 2: Convert to fraction form
   111,572/245,258 = 245,258/x
3. Step 3: Cross multiply
   111,572x = 245,258 × 245,258
4. Step 4: Simplify right side
   111,572x = 60,151,486,564
5. Step 5: Solve for x
   x = 60,151,486,564/111,572
6. Step 6: Final answer
   x = 539,127.08