Finding the Third Proportional to 134,472 and 289,690.50

Step by Step Solution

1. Step 1: Write the proportion equation
   134,472 : 289,690.50 = 289,690.50 : x
2. Step 2: Convert to fraction form
   134,472/289,690.50 = 289,690.50/x
3. Step 3: Cross multiply
   134,472x = 289,690.50 × 289,690.50
4. Step 4: Simplify right side
   134,472x = 83,920,585,790.25
5. Step 5: Solve for x
   x = 83,920,585,790.25/134,472
6. Step 6: Final answer
   x = 624,074.79