Finding the Third Proportional to 112,438 and 240,818

Step by Step Solution

1. Step 1: Write the proportion equation
   112,438 : 240,818 = 240,818 : x
2. Step 2: Convert to fraction form
   112,438/240,818 = 240,818/x
3. Step 3: Cross multiply
   112,438x = 240,818 × 240,818
4. Step 4: Simplify right side
   112,438x = 57,993,309,124
5. Step 5: Solve for x
   x = 57,993,309,124/112,438
6. Step 6: Final answer
   x = 515,780.33