Finding the Third Proportional to 306,082.50 and 664,584

Step by Step Solution

1. Step 1: Write the proportion equation
   306,082.50 : 664,584 = 664,584 : x
2. Step 2: Convert to fraction form
   306,082.50/664,584 = 664,584/x
3. Step 3: Cross multiply
   306,082.50x = 664,584 × 664,584
4. Step 4: Simplify right side
   306,082.50x = 441,671,893,056
5. Step 5: Solve for x
   x = 441,671,893,056/306,082.50
6. Step 6: Final answer
   x = 1,442,983.16