Finding the Third Proportional to 12,964 and 20,112

Step by Step Solution

1. Step 1: Write the proportion equation
   12,964 : 20,112 = 20,112 : x
2. Step 2: Convert to fraction form
   12,964/20,112 = 20,112/x
3. Step 3: Cross multiply
   12,964x = 20,112 × 20,112
4. Step 4: Simplify right side
   12,964x = 404,492,544
5. Step 5: Solve for x
   x = 404,492,544/12,964
6. Step 6: Final answer
   x = 31,201.21