Finding the Third Proportional to 401,980.50 and 850,617

Step by Step Solution

1. Step 1: Write the proportion equation
   401,980.50 : 850,617 = 850,617 : x
2. Step 2: Convert to fraction form
   401,980.50/850,617 = 850,617/x
3. Step 3: Cross multiply
   401,980.50x = 850,617 × 850,617
4. Step 4: Simplify right side
   401,980.50x = 723,549,280,689
5. Step 5: Solve for x
   x = 723,549,280,689/401,980.50
6. Step 6: Final answer
   x = 1,799,961.14