Finding the Third Proportional to 222,081 and 316,513.50

Step by Step Solution

1. Step 1: Write the proportion equation
   222,081 : 316,513.50 = 316,513.50 : x
2. Step 2: Convert to fraction form
   222,081/316,513.50 = 316,513.50/x
3. Step 3: Cross multiply
   222,081x = 316,513.50 × 316,513.50
4. Step 4: Simplify right side
   222,081x = 100,180,795,682.25
5. Step 5: Solve for x
   x = 100,180,795,682.25/222,081
6. Step 6: Final answer
   x = 451,100.25