Finding the Third Proportional to 20,392 and 43,240

Step by Step Solution

1. Step 1: Write the proportion equation
   20,392 : 43,240 = 43,240 : x
2. Step 2: Convert to fraction form
   20,392/43,240 = 43,240/x
3. Step 3: Cross multiply
   20,392x = 43,240 × 43,240
4. Step 4: Simplify right side
   20,392x = 1,869,697,600
5. Step 5: Solve for x
   x = 1,869,697,600/20,392
6. Step 6: Final answer
   x = 91,687.80