Finding the Third Proportional to 67,987.69 and 145,821.94

Step by Step Solution

1. Step 1: Write the proportion equation
   67,987.69 : 145,821.94 = 145,821.94 : x
2. Step 2: Convert to fraction form
   67,987.69/145,821.94 = 145,821.94/x
3. Step 3: Cross multiply
   67,987.69x = 145,821.94 × 145,821.94
4. Step 4: Simplify right side
   67,987.69x = 21,264,037,456.25
5. Step 5: Solve for x
   x = 21,264,037,456.25/67,987.69
6. Step 6: Final answer
   x = 312,763.06