Finding the Third Proportional to 142,075 and 308,288

Step by Step Solution

1. Step 1: Write the proportion equation
   142,075 : 308,288 = 308,288 : x
2. Step 2: Convert to fraction form
   142,075/308,288 = 308,288/x
3. Step 3: Cross multiply
   142,075x = 308,288 × 308,288
4. Step 4: Simplify right side
   142,075x = 95,041,490,944
5. Step 5: Solve for x
   x = 95,041,490,944/142,075
6. Step 6: Final answer
   x = 668,952.95