Finding the Third Proportional to 295,656.75 and 648,540

Step by Step Solution

1. Step 1: Write the proportion equation
   295,656.75 : 648,540 = 648,540 : x
2. Step 2: Convert to fraction form
   295,656.75/648,540 = 648,540/x
3. Step 3: Cross multiply
   295,656.75x = 648,540 × 648,540
4. Step 4: Simplify right side
   295,656.75x = 420,604,131,600
5. Step 5: Solve for x
   x = 420,604,131,600/295,656.75
6. Step 6: Final answer
   x = 1,422,609.60