Finding the Third Proportional to 17,909 and 42,287

Step by Step Solution

1. Step 1: Write the proportion equation
   17,909 : 42,287 = 42,287 : x
2. Step 2: Convert to fraction form
   17,909/42,287 = 42,287/x
3. Step 3: Cross multiply
   17,909x = 42,287 × 42,287
4. Step 4: Simplify right side
   17,909x = 1,788,190,369
5. Step 5: Solve for x
   x = 1,788,190,369/17,909
6. Step 6: Final answer
   x = 99,848.70