Finding the Third Proportional to 67,990.50 and 145,824

Step by Step Solution

1. Step 1: Write the proportion equation
   67,990.50 : 145,824 = 145,824 : x
2. Step 2: Convert to fraction form
   67,990.50/145,824 = 145,824/x
3. Step 3: Cross multiply
   67,990.50x = 145,824 × 145,824
4. Step 4: Simplify right side
   67,990.50x = 21,264,638,976
5. Step 5: Solve for x
   x = 21,264,638,976/67,990.50
6. Step 6: Final answer
   x = 312,758.97