Finding the Third Proportional to 139,826 and 302,980

Step by Step Solution

1. Step 1: Write the proportion equation
   139,826 : 302,980 = 302,980 : x
2. Step 2: Convert to fraction form
   139,826/302,980 = 302,980/x
3. Step 3: Cross multiply
   139,826x = 302,980 × 302,980
4. Step 4: Simplify right side
   139,826x = 91,796,880,400
5. Step 5: Solve for x
   x = 91,796,880,400/139,826
6. Step 6: Final answer
   x = 656,507.95