Finding the Third Proportional to 68,143.50 and 145,602

Step by Step Solution

1. Step 1: Write the proportion equation
   68,143.50 : 145,602 = 145,602 : x
2. Step 2: Convert to fraction form
   68,143.50/145,602 = 145,602/x
3. Step 3: Cross multiply
   68,143.50x = 145,602 × 145,602
4. Step 4: Simplify right side
   68,143.50x = 21,199,942,404
5. Step 5: Solve for x
   x = 21,199,942,404/68,143.50
6. Step 6: Final answer
   x = 311,107.33