Finding the Third Proportional to 20,842.75 and 45,638.38

Step by Step Solution

1. Step 1: Write the proportion equation
   20,842.75 : 45,638.38 = 45,638.38 : x
2. Step 2: Convert to fraction form
   20,842.75/45,638.38 = 45,638.38/x
3. Step 3: Cross multiply
   20,842.75x = 45,638.38 × 45,638.38
4. Step 4: Simplify right side
   20,842.75x = 2,082,861,272.64
5. Step 5: Solve for x
   x = 2,082,861,272.64/20,842.75
6. Step 6: Final answer
   x = 99,932.17