Finding the Third Proportional to 289,632 and 605,731.50

Step by Step Solution

1. Step 1: Write the proportion equation
   289,632 : 605,731.50 = 605,731.50 : x
2. Step 2: Convert to fraction form
   289,632/605,731.50 = 605,731.50/x
3. Step 3: Cross multiply
   289,632x = 605,731.50 × 605,731.50
4. Step 4: Simplify right side
   289,632x = 366,910,650,092.25
5. Step 5: Solve for x
   x = 366,910,650,092.25/289,632
6. Step 6: Final answer
   x = 1,266,816.68