Finding the Third Proportional to 249,786 and 380,936.25

Step by Step Solution

1. Step 1: Write the proportion equation
   249,786 : 380,936.25 = 380,936.25 : x
2. Step 2: Convert to fraction form
   249,786/380,936.25 = 380,936.25/x
3. Step 3: Cross multiply
   249,786x = 380,936.25 × 380,936.25
4. Step 4: Simplify right side
   249,786x = 145,112,426,564.06
5. Step 5: Solve for x
   x = 145,112,426,564.06/249,786
6. Step 6: Final answer
   x = 580,947.00