Finding the Third Proportional to 139,320 and 296,622

Step by Step Solution

1. Step 1: Write the proportion equation
   139,320 : 296,622 = 296,622 : x
2. Step 2: Convert to fraction form
   139,320/296,622 = 296,622/x
3. Step 3: Cross multiply
   139,320x = 296,622 × 296,622
4. Step 4: Simplify right side
   139,320x = 87,984,610,884
5. Step 5: Solve for x
   x = 87,984,610,884/139,320
6. Step 6: Final answer
   x = 631,528.93