Finding the Third Proportional to 139,756 and 301,642

Step by Step Solution

1. Step 1: Write the proportion equation
   139,756 : 301,642 = 301,642 : x
2. Step 2: Convert to fraction form
   139,756/301,642 = 301,642/x
3. Step 3: Cross multiply
   139,756x = 301,642 × 301,642
4. Step 4: Simplify right side
   139,756x = 90,987,896,164
5. Step 5: Solve for x
   x = 90,987,896,164/139,756
6. Step 6: Final answer
   x = 651,048.23