Finding the Third Proportional to 543,538.50 and 799,321.50

Step by Step Solution

1. Step 1: Write the proportion equation
   543,538.50 : 799,321.50 = 799,321.50 : x
2. Step 2: Convert to fraction form
   543,538.50/799,321.50 = 799,321.50/x
3. Step 3: Cross multiply
   543,538.50x = 799,321.50 × 799,321.50
4. Step 4: Simplify right side
   543,538.50x = 638,914,860,362.25
5. Step 5: Solve for x
   x = 638,914,860,362.25/543,538.50
6. Step 6: Final answer
   x = 1,175,473.05