Finding the Third Proportional to 67,986 and 145,808.50

Step by Step Solution

1. Step 1: Write the proportion equation
   67,986 : 145,808.50 = 145,808.50 : x
2. Step 2: Convert to fraction form
   67,986/145,808.50 = 145,808.50/x
3. Step 3: Cross multiply
   67,986x = 145,808.50 × 145,808.50
4. Step 4: Simplify right side
   67,986x = 21,260,118,672.25
5. Step 5: Solve for x
   x = 21,260,118,672.25/67,986
6. Step 6: Final answer
   x = 312,713.19