Finding the Third Proportional to 339,207 and 498,442.50

Step by Step Solution

1. Step 1: Write the proportion equation
   339,207 : 498,442.50 = 498,442.50 : x
2. Step 2: Convert to fraction form
   339,207/498,442.50 = 498,442.50/x
3. Step 3: Cross multiply
   339,207x = 498,442.50 × 498,442.50
4. Step 4: Simplify right side
   339,207x = 248,444,925,806.25
5. Step 5: Solve for x
   x = 248,444,925,806.25/339,207
6. Step 6: Final answer
   x = 732,428.65