Finding the Third Proportional to 222,201 and 311,053.50

Step by Step Solution

1. Step 1: Write the proportion equation
   222,201 : 311,053.50 = 311,053.50 : x
2. Step 2: Convert to fraction form
   222,201/311,053.50 = 311,053.50/x
3. Step 3: Cross multiply
   222,201x = 311,053.50 × 311,053.50
4. Step 4: Simplify right side
   222,201x = 96,754,279,862.25
5. Step 5: Solve for x
   x = 96,754,279,862.25/222,201
6. Step 6: Final answer
   x = 435,435.84