Finding the Third Proportional to 209,710.50 and 456,285

Step by Step Solution

1. Step 1: Write the proportion equation
   209,710.50 : 456,285 = 456,285 : x
2. Step 2: Convert to fraction form
   209,710.50/456,285 = 456,285/x
3. Step 3: Cross multiply
   209,710.50x = 456,285 × 456,285
4. Step 4: Simplify right side
   209,710.50x = 208,196,001,225
5. Step 5: Solve for x
   x = 208,196,001,225/209,710.50
6. Step 6: Final answer
   x = 992,778.15