Finding the Third Proportional to 20,842.88 and 45,638.63

Step by Step Solution

1. Step 1: Write the proportion equation
   20,842.88 : 45,638.63 = 45,638.63 : x
2. Step 2: Convert to fraction form
   20,842.88/45,638.63 = 45,638.63/x
3. Step 3: Cross multiply
   20,842.88x = 45,638.63 × 45,638.63
4. Step 4: Simplify right side
   20,842.88x = 2,082,884,091.89
5. Step 5: Solve for x
   x = 2,082,884,091.89/20,842.88
6. Step 6: Final answer
   x = 99,932.67