Finding the Third Proportional to 139,086 and 304,422

Step by Step Solution

1. Step 1: Write the proportion equation
   139,086 : 304,422 = 304,422 : x
2. Step 2: Convert to fraction form
   139,086/304,422 = 304,422/x
3. Step 3: Cross multiply
   139,086x = 304,422 × 304,422
4. Step 4: Simplify right side
   139,086x = 92,672,754,084
5. Step 5: Solve for x
   x = 92,672,754,084/139,086
6. Step 6: Final answer
   x = 666,298.22