Finding the Third Proportional to 142,792.88 and 317,499.75

Step by Step Solution

1. Step 1: Write the proportion equation
   142,792.88 : 317,499.75 = 317,499.75 : x
2. Step 2: Convert to fraction form
   142,792.88/317,499.75 = 317,499.75/x
3. Step 3: Cross multiply
   142,792.88x = 317,499.75 × 317,499.75
4. Step 4: Simplify right side
   142,792.88x = 100,806,091,250.06
5. Step 5: Solve for x
   x = 100,806,091,250.06/142,792.88
6. Step 6: Final answer
   x = 705,960.23