Finding the Third Proportional to 360,807 and 783,097.50

Step by Step Solution

1. Step 1: Write the proportion equation
   360,807 : 783,097.50 = 783,097.50 : x
2. Step 2: Convert to fraction form
   360,807/783,097.50 = 783,097.50/x
3. Step 3: Cross multiply
   360,807x = 783,097.50 × 783,097.50
4. Step 4: Simplify right side
   360,807x = 613,241,694,506.25
5. Step 5: Solve for x
   x = 613,241,694,506.25/360,807
6. Step 6: Final answer
   x = 1,699,639.13