Finding the Third Proportional to 447,160.50 and 664,659

Step by Step Solution

1. Step 1: Write the proportion equation
   447,160.50 : 664,659 = 664,659 : x
2. Step 2: Convert to fraction form
   447,160.50/664,659 = 664,659/x
3. Step 3: Cross multiply
   447,160.50x = 664,659 × 664,659
4. Step 4: Simplify right side
   447,160.50x = 441,771,586,281
5. Step 5: Solve for x
   x = 441,771,586,281/447,160.50
6. Step 6: Final answer
   x = 987,948.59