Finding the Third Proportional to 216,805.50 and 333,656.25

Step by Step Solution

1. Step 1: Write the proportion equation
   216,805.50 : 333,656.25 = 333,656.25 : x
2. Step 2: Convert to fraction form
   216,805.50/333,656.25 = 333,656.25/x
3. Step 3: Cross multiply
   216,805.50x = 333,656.25 × 333,656.25
4. Step 4: Simplify right side
   216,805.50x = 111,326,493,164.06
5. Step 5: Solve for x
   x = 111,326,493,164.06/216,805.50
6. Step 6: Final answer
   x = 513,485.56