Finding the Third Proportional to 112,878 and 245,216

Step by Step Solution

1. Step 1: Write the proportion equation
   112,878 : 245,216 = 245,216 : x
2. Step 2: Convert to fraction form
   112,878/245,216 = 245,216/x
3. Step 3: Cross multiply
   112,878x = 245,216 × 245,216
4. Step 4: Simplify right side
   112,878x = 60,130,886,656
5. Step 5: Solve for x
   x = 60,130,886,656/112,878
6. Step 6: Final answer
   x = 532,706.88