Finding the Third Proportional to 483,720 and 762,687.75

Step by Step Solution

1. Step 1: Write the proportion equation
   483,720 : 762,687.75 = 762,687.75 : x
2. Step 2: Convert to fraction form
   483,720/762,687.75 = 762,687.75/x
3. Step 3: Cross multiply
   483,720x = 762,687.75 × 762,687.75
4. Step 4: Simplify right side
   483,720x = 581,692,604,000.06
5. Step 5: Solve for x
   x = 581,692,604,000.06/483,720
6. Step 6: Final answer
   x = 1,202,539.91