Finding the Third Proportional to 328,226 and 706,671.50

Step by Step Solution

1. Step 1: Write the proportion equation
   328,226 : 706,671.50 = 706,671.50 : x
2. Step 2: Convert to fraction form
   328,226/706,671.50 = 706,671.50/x
3. Step 3: Cross multiply
   328,226x = 706,671.50 × 706,671.50
4. Step 4: Simplify right side
   328,226x = 499,384,608,912.25
5. Step 5: Solve for x
   x = 499,384,608,912.25/328,226
6. Step 6: Final answer
   x = 1,521,465.72