Finding the Third Proportional to 142,041.81 and 315,613.57

Step by Step Solution

1. Step 1: Write the proportion equation
   142,041.81 : 315,613.57 = 315,613.57 : x
2. Step 2: Convert to fraction form
   142,041.81/315,613.57 = 315,613.57/x
3. Step 3: Cross multiply
   142,041.81x = 315,613.57 × 315,613.57
4. Step 4: Simplify right side
   142,041.81x = 99,611,927,614.70
5. Step 5: Solve for x
   x = 99,611,927,614.70/142,041.81
6. Step 6: Final answer
   x = 701,285.99