Finding the Third Proportional to 220,711.50 and 341,685

Step by Step Solution

1. Step 1: Write the proportion equation
   220,711.50 : 341,685 = 341,685 : x
2. Step 2: Convert to fraction form
   220,711.50/341,685 = 341,685/x
3. Step 3: Cross multiply
   220,711.50x = 341,685 × 341,685
4. Step 4: Simplify right side
   220,711.50x = 116,748,639,225
5. Step 5: Solve for x
   x = 116,748,639,225/220,711.50
6. Step 6: Final answer
   x = 528,964.91