Finding the Third Proportional to 222,141 and 316,591.50

Step by Step Solution

1. Step 1: Write the proportion equation
   222,141 : 316,591.50 = 316,591.50 : x
2. Step 2: Convert to fraction form
   222,141/316,591.50 = 316,591.50/x
3. Step 3: Cross multiply
   222,141x = 316,591.50 × 316,591.50
4. Step 4: Simplify right side
   222,141x = 100,230,177,872.25
5. Step 5: Solve for x
   x = 100,230,177,872.25/222,141
6. Step 6: Final answer
   x = 451,200.71