Finding the Third Proportional to 160,243 and 249,105

Step by Step Solution

1. Step 1: Write the proportion equation
   160,243 : 249,105 = 249,105 : x
2. Step 2: Convert to fraction form
   160,243/249,105 = 249,105/x
3. Step 3: Cross multiply
   160,243x = 249,105 × 249,105
4. Step 4: Simplify right side
   160,243x = 62,053,301,025
5. Step 5: Solve for x
   x = 62,053,301,025/160,243
6. Step 6: Final answer
   x = 387,245.00