Finding the Third Proportional to 221,494.50 and 343,617

Step by Step Solution

1. Step 1: Write the proportion equation
   221,494.50 : 343,617 = 343,617 : x
2. Step 2: Convert to fraction form
   221,494.50/343,617 = 343,617/x
3. Step 3: Cross multiply
   221,494.50x = 343,617 × 343,617
4. Step 4: Simplify right side
   221,494.50x = 118,072,642,689
5. Step 5: Solve for x
   x = 118,072,642,689/221,494.50
6. Step 6: Final answer
   x = 533,072.57