Finding the Third Proportional to 550,987.69 and 851,416.31

Step by Step Solution

1. Step 1: Write the proportion equation
   550,987.69 : 851,416.31 = 851,416.31 : x
2. Step 2: Convert to fraction form
   550,987.69/851,416.31 = 851,416.31/x
3. Step 3: Cross multiply
   550,987.69x = 851,416.31 × 851,416.31
4. Step 4: Simplify right side
   550,987.69x = 724,909,737,191.10
5. Step 5: Solve for x
   x = 724,909,737,191.10/550,987.69
6. Step 6: Final answer
   x = 1,315,655.06