Finding the Third Proportional to 280,749.50 and 608,789

Step by Step Solution

1. Step 1: Write the proportion equation
   280,749.50 : 608,789 = 608,789 : x
2. Step 2: Convert to fraction form
   280,749.50/608,789 = 608,789/x
3. Step 3: Cross multiply
   280,749.50x = 608,789 × 608,789
4. Step 4: Simplify right side
   280,749.50x = 370,624,046,521
5. Step 5: Solve for x
   x = 370,624,046,521/280,749.50
6. Step 6: Final answer
   x = 1,320,123.62