Finding the Third Proportional to 489,801 and 749,200.50

Step by Step Solution

1. Step 1: Write the proportion equation
   489,801 : 749,200.50 = 749,200.50 : x
2. Step 2: Convert to fraction form
   489,801/749,200.50 = 749,200.50/x
3. Step 3: Cross multiply
   489,801x = 749,200.50 × 749,200.50
4. Step 4: Simplify right side
   489,801x = 561,301,389,200.25
5. Step 5: Solve for x
   x = 561,301,389,200.25/489,801
6. Step 6: Final answer
   x = 1,145,978.45