Finding the Third Proportional to 28,309.50 and 60,628.50

Step by Step Solution

1. Step 1: Write the proportion equation
   28,309.50 : 60,628.50 = 60,628.50 : x
2. Step 2: Convert to fraction form
   28,309.50/60,628.50 = 60,628.50/x
3. Step 3: Cross multiply
   28,309.50x = 60,628.50 × 60,628.50
4. Step 4: Simplify right side
   28,309.50x = 3,675,815,012.25
5. Step 5: Solve for x
   x = 3,675,815,012.25/28,309.50
6. Step 6: Final answer
   x = 129,843.87