Finding the Third Proportional to 305,214 and 448,998.50

Step by Step Solution

1. Step 1: Write the proportion equation
   305,214 : 448,998.50 = 448,998.50 : x
2. Step 2: Convert to fraction form
   305,214/448,998.50 = 448,998.50/x
3. Step 3: Cross multiply
   305,214x = 448,998.50 × 448,998.50
4. Step 4: Simplify right side
   305,214x = 201,599,653,002.25
5. Step 5: Solve for x
   x = 201,599,653,002.25/305,214
6. Step 6: Final answer
   x = 660,519.02