Finding the Third Proportional to 20,984 and 40,904.50

Step by Step Solution

1. Step 1: Write the proportion equation
   20,984 : 40,904.50 = 40,904.50 : x
2. Step 2: Convert to fraction form
   20,984/40,904.50 = 40,904.50/x
3. Step 3: Cross multiply
   20,984x = 40,904.50 × 40,904.50
4. Step 4: Simplify right side
   20,984x = 1,673,178,120.25
5. Step 5: Solve for x
   x = 1,673,178,120.25/20,984
6. Step 6: Final answer
   x = 79,735.90