Finding the Third Proportional to 67,978.50 and 145,801

Step by Step Solution

1. Step 1: Write the proportion equation
   67,978.50 : 145,801 = 145,801 : x
2. Step 2: Convert to fraction form
   67,978.50/145,801 = 145,801/x
3. Step 3: Cross multiply
   67,978.50x = 145,801 × 145,801
4. Step 4: Simplify right side
   67,978.50x = 21,257,931,601
5. Step 5: Solve for x
   x = 21,257,931,601/67,978.50
6. Step 6: Final answer
   x = 312,715.51