Finding the Third Proportional to 143,453 and 293,242

Step by Step Solution

1. Step 1: Write the proportion equation
   143,453 : 293,242 = 293,242 : x
2. Step 2: Convert to fraction form
   143,453/293,242 = 293,242/x
3. Step 3: Cross multiply
   143,453x = 293,242 × 293,242
4. Step 4: Simplify right side
   143,453x = 85,990,870,564
5. Step 5: Solve for x
   x = 85,990,870,564/143,453
6. Step 6: Final answer
   x = 599,435.85