Finding the Third Proportional to 197,208 and 320,402.25

Step by Step Solution

1. Step 1: Write the proportion equation
   197,208 : 320,402.25 = 320,402.25 : x
2. Step 2: Convert to fraction form
   197,208/320,402.25 = 320,402.25/x
3. Step 3: Cross multiply
   197,208x = 320,402.25 × 320,402.25
4. Step 4: Simplify right side
   197,208x = 102,657,601,805.06
5. Step 5: Solve for x
   x = 102,657,601,805.06/197,208
6. Step 6: Final answer
   x = 520,554.96