Finding the Third Proportional to 144,078 and 316,182

Step by Step Solution

1. Step 1: Write the proportion equation
   144,078 : 316,182 = 316,182 : x
2. Step 2: Convert to fraction form
   144,078/316,182 = 316,182/x
3. Step 3: Cross multiply
   144,078x = 316,182 × 316,182
4. Step 4: Simplify right side
   144,078x = 99,971,057,124
5. Step 5: Solve for x
   x = 99,971,057,124/144,078
6. Step 6: Final answer
   x = 693,867.61