Finding the Third Proportional to 67,999.50 and 145,847.25

Step by Step Solution

1. Step 1: Write the proportion equation
   67,999.50 : 145,847.25 = 145,847.25 : x
2. Step 2: Convert to fraction form
   67,999.50/145,847.25 = 145,847.25/x
3. Step 3: Cross multiply
   67,999.50x = 145,847.25 × 145,847.25
4. Step 4: Simplify right side
   67,999.50x = 21,271,420,332.56
5. Step 5: Solve for x
   x = 21,271,420,332.56/67,999.50
6. Step 6: Final answer
   x = 312,817.31