Finding the Third Proportional to 550,279.50 and 830,968.50

Step by Step Solution

1. Step 1: Write the proportion equation
   550,279.50 : 830,968.50 = 830,968.50 : x
2. Step 2: Convert to fraction form
   550,279.50/830,968.50 = 830,968.50/x
3. Step 3: Cross multiply
   550,279.50x = 830,968.50 × 830,968.50
4. Step 4: Simplify right side
   550,279.50x = 690,508,647,992.25
5. Step 5: Solve for x
   x = 690,508,647,992.25/550,279.50
6. Step 6: Final answer
   x = 1,254,832.59