Finding the Third Proportional to 142,486.50 and 304,042.50

Step by Step Solution

1. Step 1: Write the proportion equation
   142,486.50 : 304,042.50 = 304,042.50 : x
2. Step 2: Convert to fraction form
   142,486.50/304,042.50 = 304,042.50/x
3. Step 3: Cross multiply
   142,486.50x = 304,042.50 × 304,042.50
4. Step 4: Simplify right side
   142,486.50x = 92,441,841,806.25
5. Step 5: Solve for x
   x = 92,441,841,806.25/142,486.50
6. Step 6: Final answer
   x = 648,776.14