Finding the Third Proportional to 19,887 and 42,887

Step by Step Solution

1. Step 1: Write the proportion equation
   19,887 : 42,887 = 42,887 : x
2. Step 2: Convert to fraction form
   19,887/42,887 = 42,887/x
3. Step 3: Cross multiply
   19,887x = 42,887 × 42,887
4. Step 4: Simplify right side
   19,887x = 1,839,294,769
5. Step 5: Solve for x
   x = 1,839,294,769/19,887
6. Step 6: Final answer
   x = 92,487.29