Finding the Third Proportional to 553,441.50 and 835,245

Step by Step Solution

1. Step 1: Write the proportion equation
   553,441.50 : 835,245 = 835,245 : x
2. Step 2: Convert to fraction form
   553,441.50/835,245 = 835,245/x
3. Step 3: Cross multiply
   553,441.50x = 835,245 × 835,245
4. Step 4: Simplify right side
   553,441.50x = 697,634,210,025
5. Step 5: Solve for x
   x = 697,634,210,025/553,441.50
6. Step 6: Final answer
   x = 1,260,538.30