Finding the Third Proportional to 155,451.50 and 334,685

Step by Step Solution

1. Step 1: Write the proportion equation
   155,451.50 : 334,685 = 334,685 : x
2. Step 2: Convert to fraction form
   155,451.50/334,685 = 334,685/x
3. Step 3: Cross multiply
   155,451.50x = 334,685 × 334,685
4. Step 4: Simplify right side
   155,451.50x = 112,014,049,225
5. Step 5: Solve for x
   x = 112,014,049,225/155,451.50
6. Step 6: Final answer
   x = 720,572.33