Finding the Third Proportional to 67,980.50 and 145,802

Step by Step Solution

1. Step 1: Write the proportion equation
   67,980.50 : 145,802 = 145,802 : x
2. Step 2: Convert to fraction form
   67,980.50/145,802 = 145,802/x
3. Step 3: Cross multiply
   67,980.50x = 145,802 × 145,802
4. Step 4: Simplify right side
   67,980.50x = 21,258,223,204
5. Step 5: Solve for x
   x = 21,258,223,204/67,980.50
6. Step 6: Final answer
   x = 312,710.60