Finding the Third Proportional to 138,320 and 303,426

Step by Step Solution

1. Step 1: Write the proportion equation
   138,320 : 303,426 = 303,426 : x
2. Step 2: Convert to fraction form
   138,320/303,426 = 303,426/x
3. Step 3: Cross multiply
   138,320x = 303,426 × 303,426
4. Step 4: Simplify right side
   138,320x = 92,067,337,476
5. Step 5: Solve for x
   x = 92,067,337,476/138,320
6. Step 6: Final answer
   x = 665,611.17