Finding the Third Proportional to 210,300.50 and 317,959

Step by Step Solution

1. Step 1: Write the proportion equation
   210,300.50 : 317,959 = 317,959 : x
2. Step 2: Convert to fraction form
   210,300.50/317,959 = 317,959/x
3. Step 3: Cross multiply
   210,300.50x = 317,959 × 317,959
4. Step 4: Simplify right side
   210,300.50x = 101,097,925,681
5. Step 5: Solve for x
   x = 101,097,925,681/210,300.50
6. Step 6: Final answer
   x = 480,730.79