Finding the Third Proportional to 139,158 and 303,312

Step by Step Solution

1. Step 1: Write the proportion equation
   139,158 : 303,312 = 303,312 : x
2. Step 2: Convert to fraction form
   139,158/303,312 = 303,312/x
3. Step 3: Cross multiply
   139,158x = 303,312 × 303,312
4. Step 4: Simplify right side
   139,158x = 91,998,169,344
5. Step 5: Solve for x
   x = 91,998,169,344/139,158
6. Step 6: Final answer
   x = 661,105.86