Finding the Third Proportional to 280,224 and 655,488

Step by Step Solution

1. Step 1: Write the proportion equation
   280,224 : 655,488 = 655,488 : x
2. Step 2: Convert to fraction form
   280,224/655,488 = 655,488/x
3. Step 3: Cross multiply
   280,224x = 655,488 × 655,488
4. Step 4: Simplify right side
   280,224x = 429,664,518,144
5. Step 5: Solve for x
   x = 429,664,518,144/280,224
6. Step 6: Final answer
   x = 1,533,289.50