Finding the Third Proportional to 213,180 and 307,981.50

Step by Step Solution

1. Step 1: Write the proportion equation
   213,180 : 307,981.50 = 307,981.50 : x
2. Step 2: Convert to fraction form
   213,180/307,981.50 = 307,981.50/x
3. Step 3: Cross multiply
   213,180x = 307,981.50 × 307,981.50
4. Step 4: Simplify right side
   213,180x = 94,852,604,342.25
5. Step 5: Solve for x
   x = 94,852,604,342.25/213,180
6. Step 6: Final answer
   x = 444,941.38