Finding the Third Proportional to 134,986.50 and 288,648.56

Step by Step Solution

1. Step 1: Write the proportion equation
   134,986.50 : 288,648.56 = 288,648.56 : x
2. Step 2: Convert to fraction form
   134,986.50/288,648.56 = 288,648.56/x
3. Step 3: Cross multiply
   134,986.50x = 288,648.56 × 288,648.56
4. Step 4: Simplify right side
   134,986.50x = 83,317,992,633.32
5. Step 5: Solve for x
   x = 83,317,992,633.32/134,986.50
6. Step 6: Final answer
   x = 617,232.04