Finding the Third Proportional to 69,728.34 and 143,132.06

Step by Step Solution

1. Step 1: Write the proportion equation
   69,728.34 : 143,132.06 = 143,132.06 : x
2. Step 2: Convert to fraction form
   69,728.34/143,132.06 = 143,132.06/x
3. Step 3: Cross multiply
   69,728.34x = 143,132.06 × 143,132.06
4. Step 4: Simplify right side
   69,728.34x = 20,486,787,315.50
5. Step 5: Solve for x
   x = 20,486,787,315.50/69,728.34
6. Step 6: Final answer
   x = 293,808.60