Finding the Third Proportional to 56,040 and 120,216

Step by Step Solution

1. Step 1: Write the proportion equation
   56,040 : 120,216 = 120,216 : x
2. Step 2: Convert to fraction form
   56,040/120,216 = 120,216/x
3. Step 3: Cross multiply
   56,040x = 120,216 × 120,216
4. Step 4: Simplify right side
   56,040x = 14,451,886,656
5. Step 5: Solve for x
   x = 14,451,886,656/56,040
6. Step 6: Final answer
   x = 257,885.20