Finding the Third Proportional to 19,750 and 42,279

Step by Step Solution

1. Step 1: Write the proportion equation
   19,750 : 42,279 = 42,279 : x
2. Step 2: Convert to fraction form
   19,750/42,279 = 42,279/x
3. Step 3: Cross multiply
   19,750x = 42,279 × 42,279
4. Step 4: Simplify right side
   19,750x = 1,787,513,841
5. Step 5: Solve for x
   x = 1,787,513,841/19,750
6. Step 6: Final answer
   x = 90,507.03