Finding the Third Proportional to 142,810.59 and 313,123.22

Step by Step Solution

1. Step 1: Write the proportion equation
   142,810.59 : 313,123.22 = 313,123.22 : x
2. Step 2: Convert to fraction form
   142,810.59/313,123.22 = 313,123.22/x
3. Step 3: Cross multiply
   142,810.59x = 313,123.22 × 313,123.22
4. Step 4: Simplify right side
   142,810.59x = 98,046,150,120.36
5. Step 5: Solve for x
   x = 98,046,150,120.36/142,810.59
6. Step 6: Final answer
   x = 686,546.76