Finding the Third Proportional to 208,309 and 446,142.50

Step by Step Solution

1. Step 1: Write the proportion equation
   208,309 : 446,142.50 = 446,142.50 : x
2. Step 2: Convert to fraction form
   208,309/446,142.50 = 446,142.50/x
3. Step 3: Cross multiply
   208,309x = 446,142.50 × 446,142.50
4. Step 4: Simplify right side
   208,309x = 199,043,130,306.25
5. Step 5: Solve for x
   x = 199,043,130,306.25/208,309
6. Step 6: Final answer
   x = 955,518.63