Finding the Third Proportional to 20,679 and 45,290

Step by Step Solution

1. Step 1: Write the proportion equation
   20,679 : 45,290 = 45,290 : x
2. Step 2: Convert to fraction form
   20,679/45,290 = 45,290/x
3. Step 3: Cross multiply
   20,679x = 45,290 × 45,290
4. Step 4: Simplify right side
   20,679x = 2,051,184,100
5. Step 5: Solve for x
   x = 2,051,184,100/20,679
6. Step 6: Final answer
   x = 99,191.65