Finding the Third Proportional to 423,010.50 and 655,320

Step by Step Solution

1. Step 1: Write the proportion equation
   423,010.50 : 655,320 = 655,320 : x
2. Step 2: Convert to fraction form
   423,010.50/655,320 = 655,320/x
3. Step 3: Cross multiply
   423,010.50x = 655,320 × 655,320
4. Step 4: Simplify right side
   423,010.50x = 429,444,302,400
5. Step 5: Solve for x
   x = 429,444,302,400/423,010.50
6. Step 6: Final answer
   x = 1,015,209.56