Finding the Third Proportional to 20,699 and 45,158

Step by Step Solution

1. Step 1: Write the proportion equation
   20,699 : 45,158 = 45,158 : x
2. Step 2: Convert to fraction form
   20,699/45,158 = 45,158/x
3. Step 3: Cross multiply
   20,699x = 45,158 × 45,158
4. Step 4: Simplify right side
   20,699x = 2,039,244,964
5. Step 5: Solve for x
   x = 2,039,244,964/20,699
6. Step 6: Final answer
   x = 98,519.01