Finding the Third Proportional to 222,817.50 and 487,741.50

Step by Step Solution

1. Step 1: Write the proportion equation
   222,817.50 : 487,741.50 = 487,741.50 : x
2. Step 2: Convert to fraction form
   222,817.50/487,741.50 = 487,741.50/x
3. Step 3: Cross multiply
   222,817.50x = 487,741.50 × 487,741.50
4. Step 4: Simplify right side
   222,817.50x = 237,891,770,822.25
5. Step 5: Solve for x
   x = 237,891,770,822.25/222,817.50
6. Step 6: Final answer
   x = 1,067,652.99