Finding the Third Proportional to 19,872 and 42,113.25

Step by Step Solution

1. Step 1: Write the proportion equation
   19,872 : 42,113.25 = 42,113.25 : x
2. Step 2: Convert to fraction form
   19,872/42,113.25 = 42,113.25/x
3. Step 3: Cross multiply
   19,872x = 42,113.25 × 42,113.25
4. Step 4: Simplify right side
   19,872x = 1,773,525,825.56
5. Step 5: Solve for x
   x = 1,773,525,825.56/19,872
6. Step 6: Final answer
   x = 89,247.48