Finding the Third Proportional to 142,592.06 and 309,816.56

Step by Step Solution

1. Step 1: Write the proportion equation
   142,592.06 : 309,816.56 = 309,816.56 : x
2. Step 2: Convert to fraction form
   142,592.06/309,816.56 = 309,816.56/x
3. Step 3: Cross multiply
   142,592.06x = 309,816.56 × 309,816.56
4. Step 4: Simplify right side
   142,592.06x = 95,986,302,399.32
5. Step 5: Solve for x
   x = 95,986,302,399.32/142,592.06
6. Step 6: Final answer
   x = 673,153.19