Finding the Third Proportional to 219,973 and 343,105.50

Step by Step Solution

1. Step 1: Write the proportion equation
   219,973 : 343,105.50 = 343,105.50 : x
2. Step 2: Convert to fraction form
   219,973/343,105.50 = 343,105.50/x
3. Step 3: Cross multiply
   219,973x = 343,105.50 × 343,105.50
4. Step 4: Simplify right side
   219,973x = 117,721,384,130.25
5. Step 5: Solve for x
   x = 117,721,384,130.25/219,973
6. Step 6: Final answer
   x = 535,162.88