Finding the Third Proportional to 143,730 and 302,356

Step by Step Solution

1. Step 1: Write the proportion equation
   143,730 : 302,356 = 302,356 : x
2. Step 2: Convert to fraction form
   143,730/302,356 = 302,356/x
3. Step 3: Cross multiply
   143,730x = 302,356 × 302,356
4. Step 4: Simplify right side
   143,730x = 91,419,150,736
5. Step 5: Solve for x
   x = 91,419,150,736/143,730
6. Step 6: Final answer
   x = 636,047.80