Finding the Third Proportional to 70,359.50 and 143,590

Step by Step Solution

1. Step 1: Write the proportion equation
   70,359.50 : 143,590 = 143,590 : x
2. Step 2: Convert to fraction form
   70,359.50/143,590 = 143,590/x
3. Step 3: Cross multiply
   70,359.50x = 143,590 × 143,590
4. Step 4: Simplify right side
   70,359.50x = 20,618,088,100
5. Step 5: Solve for x
   x = 20,618,088,100/70,359.50
6. Step 6: Final answer
   x = 293,039.15