Finding the Third Proportional to 68,860.50 and 145,986

Step by Step Solution

1. Step 1: Write the proportion equation
   68,860.50 : 145,986 = 145,986 : x
2. Step 2: Convert to fraction form
   68,860.50/145,986 = 145,986/x
3. Step 3: Cross multiply
   68,860.50x = 145,986 × 145,986
4. Step 4: Simplify right side
   68,860.50x = 21,311,912,196
5. Step 5: Solve for x
   x = 21,311,912,196/68,860.50
6. Step 6: Final answer
   x = 309,494.01