Finding the Third Proportional to 257,009.50 and 556,922

Step by Step Solution

1. Step 1: Write the proportion equation
   257,009.50 : 556,922 = 556,922 : x
2. Step 2: Convert to fraction form
   257,009.50/556,922 = 556,922/x
3. Step 3: Cross multiply
   257,009.50x = 556,922 × 556,922
4. Step 4: Simplify right side
   257,009.50x = 310,162,114,084
5. Step 5: Solve for x
   x = 310,162,114,084/257,009.50
6. Step 6: Final answer
   x = 1,206,811.87