Finding the Third Proportional to 8,130 and 10,615.50

Step by Step Solution

1. Step 1: Write the proportion equation
   8,130 : 10,615.50 = 10,615.50 : x
2. Step 2: Convert to fraction form
   8,130/10,615.50 = 10,615.50/x
3. Step 3: Cross multiply
   8,130x = 10,615.50 × 10,615.50
4. Step 4: Simplify right side
   8,130x = 112,688,840.25
5. Step 5: Solve for x
   x = 112,688,840.25/8,130
6. Step 6: Final answer
   x = 13,860.87