Finding the Third Proportional to 222,581.25 and 524,899.50

Step by Step Solution

1. Step 1: Write the proportion equation
   222,581.25 : 524,899.50 = 524,899.50 : x
2. Step 2: Convert to fraction form
   222,581.25/524,899.50 = 524,899.50/x
3. Step 3: Cross multiply
   222,581.25x = 524,899.50 × 524,899.50
4. Step 4: Simplify right side
   222,581.25x = 275,519,485,100.25
5. Step 5: Solve for x
   x = 275,519,485,100.25/222,581.25
6. Step 6: Final answer
   x = 1,237,837.80