Finding the Third Proportional to 139,829 and 302,986

Step by Step Solution

1. Step 1: Write the proportion equation
   139,829 : 302,986 = 302,986 : x
2. Step 2: Convert to fraction form
   139,829/302,986 = 302,986/x
3. Step 3: Cross multiply
   139,829x = 302,986 × 302,986
4. Step 4: Simplify right side
   139,829x = 91,800,516,196
5. Step 5: Solve for x
   x = 91,800,516,196/139,829
6. Step 6: Final answer
   x = 656,519.86