Finding the Third Proportional to 143,174 and 314,668

Step by Step Solution

1. Step 1: Write the proportion equation
   143,174 : 314,668 = 314,668 : x
2. Step 2: Convert to fraction form
   143,174/314,668 = 314,668/x
3. Step 3: Cross multiply
   143,174x = 314,668 × 314,668
4. Step 4: Simplify right side
   143,174x = 99,015,950,224
5. Step 5: Solve for x
   x = 99,015,950,224/143,174
6. Step 6: Final answer
   x = 691,577.73