Finding the Third Proportional to 216,967 and 335,917.50

Step by Step Solution

1. Step 1: Write the proportion equation
   216,967 : 335,917.50 = 335,917.50 : x
2. Step 2: Convert to fraction form
   216,967/335,917.50 = 335,917.50/x
3. Step 3: Cross multiply
   216,967x = 335,917.50 × 335,917.50
4. Step 4: Simplify right side
   216,967x = 112,840,566,806.25
5. Step 5: Solve for x
   x = 112,840,566,806.25/216,967
6. Step 6: Final answer
   x = 520,081.70