Finding the Third Proportional to 287,347.50 and 615,952.69

Step by Step Solution

1. Step 1: Write the proportion equation
   287,347.50 : 615,952.69 = 615,952.69 : x
2. Step 2: Convert to fraction form
   287,347.50/615,952.69 = 615,952.69/x
3. Step 3: Cross multiply
   287,347.50x = 615,952.69 × 615,952.69
4. Step 4: Simplify right side
   287,347.50x = 379,397,713,238.47
5. Step 5: Solve for x
   x = 379,397,713,238.47/287,347.50
6. Step 6: Final answer
   x = 1,320,344.58