Finding the Third Proportional to 305,538 and 448,942.50

Step by Step Solution

1. Step 1: Write the proportion equation
   305,538 : 448,942.50 = 448,942.50 : x
2. Step 2: Convert to fraction form
   305,538/448,942.50 = 448,942.50/x
3. Step 3: Cross multiply
   305,538x = 448,942.50 × 448,942.50
4. Step 4: Simplify right side
   305,538x = 201,549,368,306.25
5. Step 5: Solve for x
   x = 201,549,368,306.25/305,538
6. Step 6: Final answer
   x = 659,654.01