Finding the Third Proportional to 68,314 and 140,030

Step by Step Solution

1. Step 1: Write the proportion equation
   68,314 : 140,030 = 140,030 : x
2. Step 2: Convert to fraction form
   68,314/140,030 = 140,030/x
3. Step 3: Cross multiply
   68,314x = 140,030 × 140,030
4. Step 4: Simplify right side
   68,314x = 19,608,400,900
5. Step 5: Solve for x
   x = 19,608,400,900/68,314
6. Step 6: Final answer
   x = 287,033.42