Finding the Third Proportional to 36,145.20 and 78,322.99

Step by Step Solution

1. Step 1: Write the proportion equation
   36,145.20 : 78,322.99 = 78,322.99 : x
2. Step 2: Convert to fraction form
   36,145.20/78,322.99 = 78,322.99/x
3. Step 3: Cross multiply
   36,145.20x = 78,322.99 × 78,322.99
4. Step 4: Simplify right side
   36,145.20x = 6,134,491,105.20
5. Step 5: Solve for x
   x = 6,134,491,105.20/36,145.20
6. Step 6: Final answer
   x = 169,718.02