Finding the Third Proportional to 302,478 and 660,358.50

Step by Step Solution

1. Step 1: Write the proportion equation
   302,478 : 660,358.50 = 660,358.50 : x
2. Step 2: Convert to fraction form
   302,478/660,358.50 = 660,358.50/x
3. Step 3: Cross multiply
   302,478x = 660,358.50 × 660,358.50
4. Step 4: Simplify right side
   302,478x = 436,073,348,522.25
5. Step 5: Solve for x
   x = 436,073,348,522.25/302,478
6. Step 6: Final answer
   x = 1,441,669.64