Finding the Third Proportional to 144,298 and 309,332

Step by Step Solution

1. Step 1: Write the proportion equation
   144,298 : 309,332 = 309,332 : x
2. Step 2: Convert to fraction form
   144,298/309,332 = 309,332/x
3. Step 3: Cross multiply
   144,298x = 309,332 × 309,332
4. Step 4: Simplify right side
   144,298x = 95,686,286,224
5. Step 5: Solve for x
   x = 95,686,286,224/144,298
6. Step 6: Final answer
   x = 663,115.82