Finding the Third Proportional to 13,189.50 and 28,459.69

Step by Step Solution

1. Step 1: Write the proportion equation
   13,189.50 : 28,459.69 = 28,459.69 : x
2. Step 2: Convert to fraction form
   13,189.50/28,459.69 = 28,459.69/x
3. Step 3: Cross multiply
   13,189.50x = 28,459.69 × 28,459.69
4. Step 4: Simplify right side
   13,189.50x = 809,953,812.60
5. Step 5: Solve for x
   x = 809,953,812.60/13,189.50
6. Step 6: Final answer
   x = 61,408.99