Finding the Third Proportional to 326,109 and 487,663.50

Step by Step Solution

1. Step 1: Write the proportion equation
   326,109 : 487,663.50 = 487,663.50 : x
2. Step 2: Convert to fraction form
   326,109/487,663.50 = 487,663.50/x
3. Step 3: Cross multiply
   326,109x = 487,663.50 × 487,663.50
4. Step 4: Simplify right side
   326,109x = 237,815,689,232.25
5. Step 5: Solve for x
   x = 237,815,689,232.25/326,109
6. Step 6: Final answer
   x = 729,252.15