Finding the Third Proportional to 282,783.50 and 615,321

Step by Step Solution

1. Step 1: Write the proportion equation
   282,783.50 : 615,321 = 615,321 : x
2. Step 2: Convert to fraction form
   282,783.50/615,321 = 615,321/x
3. Step 3: Cross multiply
   282,783.50x = 615,321 × 615,321
4. Step 4: Simplify right side
   282,783.50x = 378,619,933,041
5. Step 5: Solve for x
   x = 378,619,933,041/282,783.50
6. Step 6: Final answer
   x = 1,338,903.91