Finding the Third Proportional to 302,530.50 and 660,078

Step by Step Solution

1. Step 1: Write the proportion equation
   302,530.50 : 660,078 = 660,078 : x
2. Step 2: Convert to fraction form
   302,530.50/660,078 = 660,078/x
3. Step 3: Cross multiply
   302,530.50x = 660,078 × 660,078
4. Step 4: Simplify right side
   302,530.50x = 435,702,966,084
5. Step 5: Solve for x
   x = 435,702,966,084/302,530.50
6. Step 6: Final answer
   x = 1,440,195.17