Finding the Third Proportional to 429,907.50 and 911,020.50

Step by Step Solution

1. Step 1: Write the proportion equation
   429,907.50 : 911,020.50 = 911,020.50 : x
2. Step 2: Convert to fraction form
   429,907.50/911,020.50 = 911,020.50/x
3. Step 3: Cross multiply
   429,907.50x = 911,020.50 × 911,020.50
4. Step 4: Simplify right side
   429,907.50x = 829,958,351,420.25
5. Step 5: Solve for x
   x = 829,958,351,420.25/429,907.50
6. Step 6: Final answer
   x = 1,930,550.99