Finding the Third Proportional to 112,180 and 245,420

Step by Step Solution

1. Step 1: Write the proportion equation
   112,180 : 245,420 = 245,420 : x
2. Step 2: Convert to fraction form
   112,180/245,420 = 245,420/x
3. Step 3: Cross multiply
   112,180x = 245,420 × 245,420
4. Step 4: Simplify right side
   112,180x = 60,230,976,400
5. Step 5: Solve for x
   x = 60,230,976,400/112,180
6. Step 6: Final answer
   x = 536,913.68