Finding the Third Proportional to 70,358.50 and 143,588

Step by Step Solution

1. Step 1: Write the proportion equation
   70,358.50 : 143,588 = 143,588 : x
2. Step 2: Convert to fraction form
   70,358.50/143,588 = 143,588/x
3. Step 3: Cross multiply
   70,358.50x = 143,588 × 143,588
4. Step 4: Simplify right side
   70,358.50x = 20,617,513,744
5. Step 5: Solve for x
   x = 20,617,513,744/70,358.50
6. Step 6: Final answer
   x = 293,035.15