Finding the Third Proportional to 555,483.50 and 829,578.50

Step by Step Solution

1. Step 1: Write the proportion equation
   555,483.50 : 829,578.50 = 829,578.50 : x
2. Step 2: Convert to fraction form
   555,483.50/829,578.50 = 829,578.50/x
3. Step 3: Cross multiply
   555,483.50x = 829,578.50 × 829,578.50
4. Step 4: Simplify right side
   555,483.50x = 688,200,487,662.25
5. Step 5: Solve for x
   x = 688,200,487,662.25/555,483.50
6. Step 6: Final answer
   x = 1,238,921.57