Finding the Third Proportional to 112,820 and 245,880

Step by Step Solution

1. Step 1: Write the proportion equation
   112,820 : 245,880 = 245,880 : x
2. Step 2: Convert to fraction form
   112,820/245,880 = 245,880/x
3. Step 3: Cross multiply
   112,820x = 245,880 × 245,880
4. Step 4: Simplify right side
   112,820x = 60,456,974,400
5. Step 5: Solve for x
   x = 60,456,974,400/112,820
6. Step 6: Final answer
   x = 535,871.07