Finding the Third Proportional to 516,268.69 and 743,580

Step by Step Solution

1. Step 1: Write the proportion equation
   516,268.69 : 743,580 = 743,580 : x
2. Step 2: Convert to fraction form
   516,268.69/743,580 = 743,580/x
3. Step 3: Cross multiply
   516,268.69x = 743,580 × 743,580
4. Step 4: Simplify right side
   516,268.69x = 552,911,216,400
5. Step 5: Solve for x
   x = 552,911,216,400/516,268.69
6. Step 6: Final answer
   x = 1,070,975.69