Finding the Third Proportional to 19,722 and 42,900

Step by Step Solution

1. Step 1: Write the proportion equation
   19,722 : 42,900 = 42,900 : x
2. Step 2: Convert to fraction form
   19,722/42,900 = 42,900/x
3. Step 3: Cross multiply
   19,722x = 42,900 × 42,900
4. Step 4: Simplify right side
   19,722x = 1,840,410,000
5. Step 5: Solve for x
   x = 1,840,410,000/19,722
6. Step 6: Final answer
   x = 93,317.61