Finding the Third Proportional to 301,315 and 648,755.50

Step by Step Solution

1. Step 1: Write the proportion equation
   301,315 : 648,755.50 = 648,755.50 : x
2. Step 2: Convert to fraction form
   301,315/648,755.50 = 648,755.50/x
3. Step 3: Cross multiply
   301,315x = 648,755.50 × 648,755.50
4. Step 4: Simplify right side
   301,315x = 420,883,698,780.25
5. Step 5: Solve for x
   x = 420,883,698,780.25/301,315
6. Step 6: Final answer
   x = 1,396,822.92