Finding the Third Proportional to 138,434 and 303,076

Step by Step Solution

1. Step 1: Write the proportion equation
   138,434 : 303,076 = 303,076 : x
2. Step 2: Convert to fraction form
   138,434/303,076 = 303,076/x
3. Step 3: Cross multiply
   138,434x = 303,076 × 303,076
4. Step 4: Simplify right side
   138,434x = 91,855,061,776
5. Step 5: Solve for x
   x = 91,855,061,776/138,434
6. Step 6: Final answer
   x = 663,529.64