Finding the Third Proportional to 257,457.50 and 560,684

Step by Step Solution

1. Step 1: Write the proportion equation
   257,457.50 : 560,684 = 560,684 : x
2. Step 2: Convert to fraction form
   257,457.50/560,684 = 560,684/x
3. Step 3: Cross multiply
   257,457.50x = 560,684 × 560,684
4. Step 4: Simplify right side
   257,457.50x = 314,366,547,856
5. Step 5: Solve for x
   x = 314,366,547,856/257,457.50
6. Step 6: Final answer
   x = 1,221,042.49