Finding the Third Proportional to 139,322 and 296,626

Step by Step Solution

1. Step 1: Write the proportion equation
   139,322 : 296,626 = 296,626 : x
2. Step 2: Convert to fraction form
   139,322/296,626 = 296,626/x
3. Step 3: Cross multiply
   139,322x = 296,626 × 296,626
4. Step 4: Simplify right side
   139,322x = 87,986,983,876
5. Step 5: Solve for x
   x = 87,986,983,876/139,322
6. Step 6: Final answer
   x = 631,536.90