Finding the Third Proportional to 19,887 and 42,819

Step by Step Solution

1. Step 1: Write the proportion equation
   19,887 : 42,819 = 42,819 : x
2. Step 2: Convert to fraction form
   19,887/42,819 = 42,819/x
3. Step 3: Cross multiply
   19,887x = 42,819 × 42,819
4. Step 4: Simplify right side
   19,887x = 1,833,466,761
5. Step 5: Solve for x
   x = 1,833,466,761/19,887
6. Step 6: Final answer
   x = 92,194.24