Finding the Third Proportional to 12,216 and 19,416.75

Step by Step Solution

1. Step 1: Write the proportion equation
   12,216 : 19,416.75 = 19,416.75 : x
2. Step 2: Convert to fraction form
   12,216/19,416.75 = 19,416.75/x
3. Step 3: Cross multiply
   12,216x = 19,416.75 × 19,416.75
4. Step 4: Simplify right side
   12,216x = 377,010,180.56
5. Step 5: Solve for x
   x = 377,010,180.56/12,216
6. Step 6: Final answer
   x = 30,862.00