Finding the Third Proportional to 20,899.13 and 45,606.38

Step by Step Solution

1. Step 1: Write the proportion equation
   20,899.13 : 45,606.38 = 45,606.38 : x
2. Step 2: Convert to fraction form
   20,899.13/45,606.38 = 45,606.38/x
3. Step 3: Cross multiply
   20,899.13x = 45,606.38 × 45,606.38
4. Step 4: Simplify right side
   20,899.13x = 2,079,941,440.64
5. Step 5: Solve for x
   x = 2,079,941,440.64/20,899.13
6. Step 6: Final answer
   x = 99,522.90