Finding the Third Proportional to 65,716.50 and 141,790.50

Step by Step Solution

1. Step 1: Write the proportion equation
   65,716.50 : 141,790.50 = 141,790.50 : x
2. Step 2: Convert to fraction form
   65,716.50/141,790.50 = 141,790.50/x
3. Step 3: Cross multiply
   65,716.50x = 141,790.50 × 141,790.50
4. Step 4: Simplify right side
   65,716.50x = 20,104,545,890.25
5. Step 5: Solve for x
   x = 20,104,545,890.25/65,716.50
6. Step 6: Final answer
   x = 305,928.43