Finding the Third Proportional to 249,896.81 and 357,103.69

Step by Step Solution

1. Step 1: Write the proportion equation
   249,896.81 : 357,103.69 = 357,103.69 : x
2. Step 2: Convert to fraction form
   249,896.81/357,103.69 = 357,103.69/x
3. Step 3: Cross multiply
   249,896.81x = 357,103.69 × 357,103.69
4. Step 4: Simplify right side
   249,896.81x = 127,523,043,626.10
5. Step 5: Solve for x
   x = 127,523,043,626.10/249,896.81
6. Step 6: Final answer
   x = 510,302.80