Finding the Third Proportional to 297,435 and 648,451.50

Step by Step Solution

1. Step 1: Write the proportion equation
   297,435 : 648,451.50 = 648,451.50 : x
2. Step 2: Convert to fraction form
   297,435/648,451.50 = 648,451.50/x
3. Step 3: Cross multiply
   297,435x = 648,451.50 × 648,451.50
4. Step 4: Simplify right side
   297,435x = 420,489,347,852.25
5. Step 5: Solve for x
   x = 420,489,347,852.25/297,435
6. Step 6: Final answer
   x = 1,413,718.45