Finding the Third Proportional to 213,171 and 307,969.50

Step by Step Solution

1. Step 1: Write the proportion equation
   213,171 : 307,969.50 = 307,969.50 : x
2. Step 2: Convert to fraction form
   213,171/307,969.50 = 307,969.50/x
3. Step 3: Cross multiply
   213,171x = 307,969.50 × 307,969.50
4. Step 4: Simplify right side
   213,171x = 94,845,212,930.25
5. Step 5: Solve for x
   x = 94,845,212,930.25/213,171
6. Step 6: Final answer
   x = 444,925.50