Finding the Third Proportional to 147,173.63 and 317,872.69

Step by Step Solution

1. Step 1: Write the proportion equation
   147,173.63 : 317,872.69 = 317,872.69 : x
2. Step 2: Convert to fraction form
   147,173.63/317,872.69 = 317,872.69/x
3. Step 3: Cross multiply
   147,173.63x = 317,872.69 × 317,872.69
4. Step 4: Simplify right side
   147,173.63x = 101,043,045,458.47
5. Step 5: Solve for x
   x = 101,043,045,458.47/147,173.63
6. Step 6: Final answer
   x = 686,556.75