Finding the Third Proportional to 8,730 and 13,066.50

Step by Step Solution

1. Step 1: Write the proportion equation
   8,730 : 13,066.50 = 13,066.50 : x
2. Step 2: Convert to fraction form
   8,730/13,066.50 = 13,066.50/x
3. Step 3: Cross multiply
   8,730x = 13,066.50 × 13,066.50
4. Step 4: Simplify right side
   8,730x = 170,733,422.25
5. Step 5: Solve for x
   x = 170,733,422.25/8,730
6. Step 6: Final answer
   x = 19,557.09