Finding the Third Proportional to 489,335 and 715,119.50

Step by Step Solution

1. Step 1: Write the proportion equation
   489,335 : 715,119.50 = 715,119.50 : x
2. Step 2: Convert to fraction form
   489,335/715,119.50 = 715,119.50/x
3. Step 3: Cross multiply
   489,335x = 715,119.50 × 715,119.50
4. Step 4: Simplify right side
   489,335x = 511,395,899,280.25
5. Step 5: Solve for x
   x = 511,395,899,280.25/489,335
6. Step 6: Final answer
   x = 1,045,083.43