Finding the Third Proportional to 488,017.50 and 729,225

Step by Step Solution

1. Step 1: Write the proportion equation
   488,017.50 : 729,225 = 729,225 : x
2. Step 2: Convert to fraction form
   488,017.50/729,225 = 729,225/x
3. Step 3: Cross multiply
   488,017.50x = 729,225 × 729,225
4. Step 4: Simplify right side
   488,017.50x = 531,769,100,625
5. Step 5: Solve for x
   x = 531,769,100,625/488,017.50
6. Step 6: Final answer
   x = 1,089,651.70