Finding the Third Proportional to 139,592 and 199,382

Step by Step Solution

1. Step 1: Write the proportion equation
   139,592 : 199,382 = 199,382 : x
2. Step 2: Convert to fraction form
   139,592/199,382 = 199,382/x
3. Step 3: Cross multiply
   139,592x = 199,382 × 199,382
4. Step 4: Simplify right side
   139,592x = 39,753,181,924
5. Step 5: Solve for x
   x = 39,753,181,924/139,592
6. Step 6: Final answer
   x = 284,781.23