Finding the Third Proportional to 249,718.50 and 550,341

Step by Step Solution

1. Step 1: Write the proportion equation
   249,718.50 : 550,341 = 550,341 : x
2. Step 2: Convert to fraction form
   249,718.50/550,341 = 550,341/x
3. Step 3: Cross multiply
   249,718.50x = 550,341 × 550,341
4. Step 4: Simplify right side
   249,718.50x = 302,875,216,281
5. Step 5: Solve for x
   x = 302,875,216,281/249,718.50
6. Step 6: Final answer
   x = 1,212,866.55