Finding the Third Proportional to 20,281 and 42,113

Step by Step Solution

1. Step 1: Write the proportion equation
   20,281 : 42,113 = 42,113 : x
2. Step 2: Convert to fraction form
   20,281/42,113 = 42,113/x
3. Step 3: Cross multiply
   20,281x = 42,113 × 42,113
4. Step 4: Simplify right side
   20,281x = 1,773,504,769
5. Step 5: Solve for x
   x = 1,773,504,769/20,281
6. Step 6: Final answer
   x = 87,446.61