Finding the Third Proportional to 209,048 and 308,650

Step by Step Solution

1. Step 1: Write the proportion equation
   209,048 : 308,650 = 308,650 : x
2. Step 2: Convert to fraction form
   209,048/308,650 = 308,650/x
3. Step 3: Cross multiply
   209,048x = 308,650 × 308,650
4. Step 4: Simplify right side
   209,048x = 95,264,822,500
5. Step 5: Solve for x
   x = 95,264,822,500/209,048
6. Step 6: Final answer
   x = 455,707.89