Finding the Third Proportional to 139,600 and 302,992

Step by Step Solution

1. Step 1: Write the proportion equation
   139,600 : 302,992 = 302,992 : x
2. Step 2: Convert to fraction form
   139,600/302,992 = 302,992/x
3. Step 3: Cross multiply
   139,600x = 302,992 × 302,992
4. Step 4: Simplify right side
   139,600x = 91,804,152,064
5. Step 5: Solve for x
   x = 91,804,152,064/139,600
6. Step 6: Final answer
   x = 657,622.87