Finding the Third Proportional to 12,619.50 and 19,087.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,619.50 : 19,087.50 = 19,087.50 : x
2. Step 2: Convert to fraction form
   12,619.50/19,087.50 = 19,087.50/x
3. Step 3: Cross multiply
   12,619.50x = 19,087.50 × 19,087.50
4. Step 4: Simplify right side
   12,619.50x = 364,332,656.25
5. Step 5: Solve for x
   x = 364,332,656.25/12,619.50
6. Step 6: Final answer
   x = 28,870.61