Finding the Third Proportional to 465,486 and 664,420.50

Step by Step Solution

1. Step 1: Write the proportion equation
   465,486 : 664,420.50 = 664,420.50 : x
2. Step 2: Convert to fraction form
   465,486/664,420.50 = 664,420.50/x
3. Step 3: Cross multiply
   465,486x = 664,420.50 × 664,420.50
4. Step 4: Simplify right side
   465,486x = 441,454,600,820.25
5. Step 5: Solve for x
   x = 441,454,600,820.25/465,486
6. Step 6: Final answer
   x = 948,373.53