Finding the Third Proportional to 67,978 and 145,794.25

Step by Step Solution

1. Step 1: Write the proportion equation
   67,978 : 145,794.25 = 145,794.25 : x
2. Step 2: Convert to fraction form
   67,978/145,794.25 = 145,794.25/x
3. Step 3: Cross multiply
   67,978x = 145,794.25 × 145,794.25
4. Step 4: Simplify right side
   67,978x = 21,255,963,333.06
5. Step 5: Solve for x
   x = 21,255,963,333.06/67,978
6. Step 6: Final answer
   x = 312,688.86