Finding the Third Proportional to 12,811.50 and 19,030.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,811.50 : 19,030.50 = 19,030.50 : x
2. Step 2: Convert to fraction form
   12,811.50/19,030.50 = 19,030.50/x
3. Step 3: Cross multiply
   12,811.50x = 19,030.50 × 19,030.50
4. Step 4: Simplify right side
   12,811.50x = 362,159,930.25
5. Step 5: Solve for x
   x = 362,159,930.25/12,811.50
6. Step 6: Final answer
   x = 28,268.35