Finding the Third Proportional to 139,254 and 285,882

Step by Step Solution

1. Step 1: Write the proportion equation
   139,254 : 285,882 = 285,882 : x
2. Step 2: Convert to fraction form
   139,254/285,882 = 285,882/x
3. Step 3: Cross multiply
   139,254x = 285,882 × 285,882
4. Step 4: Simplify right side
   139,254x = 81,728,517,924
5. Step 5: Solve for x
   x = 81,728,517,924/139,254
6. Step 6: Final answer
   x = 586,902.48