Finding the Third Proportional to 20,272 and 42,152

Step by Step Solution

1. Step 1: Write the proportion equation
   20,272 : 42,152 = 42,152 : x
2. Step 2: Convert to fraction form
   20,272/42,152 = 42,152/x
3. Step 3: Cross multiply
   20,272x = 42,152 × 42,152
4. Step 4: Simplify right side
   20,272x = 1,776,791,104
5. Step 5: Solve for x
   x = 1,776,791,104/20,272
6. Step 6: Final answer
   x = 87,647.55