Finding the Third Proportional to 8,499.56 and 13,145.81

Step by Step Solution

1. Step 1: Write the proportion equation
   8,499.56 : 13,145.81 = 13,145.81 : x
2. Step 2: Convert to fraction form
   8,499.56/13,145.81 = 13,145.81/x
3. Step 3: Cross multiply
   8,499.56x = 13,145.81 × 13,145.81
4. Step 4: Simplify right side
   8,499.56x = 172,812,386.29
5. Step 5: Solve for x
   x = 172,812,386.29/8,499.56
6. Step 6: Final answer
   x = 20,331.92