Finding the Third Proportional to 142,498.50 and 304,907.25

Step by Step Solution

1. Step 1: Write the proportion equation
   142,498.50 : 304,907.25 = 304,907.25 : x
2. Step 2: Convert to fraction form
   142,498.50/304,907.25 = 304,907.25/x
3. Step 3: Cross multiply
   142,498.50x = 304,907.25 × 304,907.25
4. Step 4: Simplify right side
   142,498.50x = 92,968,431,102.56
5. Step 5: Solve for x
   x = 92,968,431,102.56/142,498.50
6. Step 6: Final answer
   x = 652,416.91