Finding the Third Proportional to 69,740 and 143,188

Step by Step Solution

1. Step 1: Write the proportion equation
   69,740 : 143,188 = 143,188 : x
2. Step 2: Convert to fraction form
   69,740/143,188 = 143,188/x
3. Step 3: Cross multiply
   69,740x = 143,188 × 143,188
4. Step 4: Simplify right side
   69,740x = 20,502,803,344
5. Step 5: Solve for x
   x = 20,502,803,344/69,740
6. Step 6: Final answer
   x = 293,989.15