Finding the Third Proportional to 139,086 and 304,416

Step by Step Solution

1. Step 1: Write the proportion equation
   139,086 : 304,416 = 304,416 : x
2. Step 2: Convert to fraction form
   139,086/304,416 = 304,416/x
3. Step 3: Cross multiply
   139,086x = 304,416 × 304,416
4. Step 4: Simplify right side
   139,086x = 92,669,101,056
5. Step 5: Solve for x
   x = 92,669,101,056/139,086
6. Step 6: Final answer
   x = 666,271.95