Finding the Third Proportional to 282,769 and 615,291.50

Step by Step Solution

1. Step 1: Write the proportion equation
   282,769 : 615,291.50 = 615,291.50 : x
2. Step 2: Convert to fraction form
   282,769/615,291.50 = 615,291.50/x
3. Step 3: Cross multiply
   282,769x = 615,291.50 × 615,291.50
4. Step 4: Simplify right side
   282,769x = 378,583,629,972.25
5. Step 5: Solve for x
   x = 378,583,629,972.25/282,769
6. Step 6: Final answer
   x = 1,338,844.18