Finding the Third Proportional to 216,867 and 469,936.50

Step by Step Solution

1. Step 1: Write the proportion equation
   216,867 : 469,936.50 = 469,936.50 : x
2. Step 2: Convert to fraction form
   216,867/469,936.50 = 469,936.50/x
3. Step 3: Cross multiply
   216,867x = 469,936.50 × 469,936.50
4. Step 4: Simplify right side
   216,867x = 220,840,314,032.25
5. Step 5: Solve for x
   x = 220,840,314,032.25/216,867
6. Step 6: Final answer
   x = 1,018,321.43