Finding the Third Proportional to 585,990 and 880,546.50

Step by Step Solution

1. Step 1: Write the proportion equation
   585,990 : 880,546.50 = 880,546.50 : x
2. Step 2: Convert to fraction form
   585,990/880,546.50 = 880,546.50/x
3. Step 3: Cross multiply
   585,990x = 880,546.50 × 880,546.50
4. Step 4: Simplify right side
   585,990x = 775,362,138,662.25
5. Step 5: Solve for x
   x = 775,362,138,662.25/585,990
6. Step 6: Final answer
   x = 1,323,166.16