Finding the Third Proportional to 581,761 and 900,289.50

Step by Step Solution

1. Step 1: Write the proportion equation
   581,761 : 900,289.50 = 900,289.50 : x
2. Step 2: Convert to fraction form
   581,761/900,289.50 = 900,289.50/x
3. Step 3: Cross multiply
   581,761x = 900,289.50 × 900,289.50
4. Step 4: Simplify right side
   581,761x = 810,521,183,810.25
5. Step 5: Solve for x
   x = 810,521,183,810.25/581,761
6. Step 6: Final answer
   x = 1,393,220.21