Finding the Third Proportional to 139,158 and 303,156

Step by Step Solution

1. Step 1: Write the proportion equation
   139,158 : 303,156 = 303,156 : x
2. Step 2: Convert to fraction form
   139,158/303,156 = 303,156/x
3. Step 3: Cross multiply
   139,158x = 303,156 × 303,156
4. Step 4: Simplify right side
   139,158x = 91,903,560,336
5. Step 5: Solve for x
   x = 91,903,560,336/139,158
6. Step 6: Final answer
   x = 660,425.99