Finding the Third Proportional to 139,406 and 296,794

Step by Step Solution

1. Step 1: Write the proportion equation
   139,406 : 296,794 = 296,794 : x
2. Step 2: Convert to fraction form
   139,406/296,794 = 296,794/x
3. Step 3: Cross multiply
   139,406x = 296,794 × 296,794
4. Step 4: Simplify right side
   139,406x = 88,086,678,436
5. Step 5: Solve for x
   x = 88,086,678,436/139,406
6. Step 6: Final answer
   x = 631,871.50