Finding the Third Proportional to 216,514 and 340,120.50

Step by Step Solution

1. Step 1: Write the proportion equation
   216,514 : 340,120.50 = 340,120.50 : x
2. Step 2: Convert to fraction form
   216,514/340,120.50 = 340,120.50/x
3. Step 3: Cross multiply
   216,514x = 340,120.50 × 340,120.50
4. Step 4: Simplify right side
   216,514x = 115,681,954,520.25
5. Step 5: Solve for x
   x = 115,681,954,520.25/216,514
6. Step 6: Final answer
   x = 534,293.18