Finding the Third Proportional to 219,687 and 351,640.50

Step by Step Solution

1. Step 1: Write the proportion equation
   219,687 : 351,640.50 = 351,640.50 : x
2. Step 2: Convert to fraction form
   219,687/351,640.50 = 351,640.50/x
3. Step 3: Cross multiply
   219,687x = 351,640.50 × 351,640.50
4. Step 4: Simplify right side
   219,687x = 123,651,041,240.25
5. Step 5: Solve for x
   x = 123,651,041,240.25/219,687
6. Step 6: Final answer
   x = 562,850.97