Finding the Third Proportional to 13,392 and 20,435

Step by Step Solution

1. Step 1: Write the proportion equation
   13,392 : 20,435 = 20,435 : x
2. Step 2: Convert to fraction form
   13,392/20,435 = 20,435/x
3. Step 3: Cross multiply
   13,392x = 20,435 × 20,435
4. Step 4: Simplify right side
   13,392x = 417,589,225
5. Step 5: Solve for x
   x = 417,589,225/13,392
6. Step 6: Final answer
   x = 31,181.99