Finding the Third Proportional to 585,171 and 918,193.50

Step by Step Solution

1. Step 1: Write the proportion equation
   585,171 : 918,193.50 = 918,193.50 : x
2. Step 2: Convert to fraction form
   585,171/918,193.50 = 918,193.50/x
3. Step 3: Cross multiply
   585,171x = 918,193.50 × 918,193.50
4. Step 4: Simplify right side
   585,171x = 843,079,303,442.25
5. Step 5: Solve for x
   x = 843,079,303,442.25/585,171
6. Step 6: Final answer
   x = 1,440,740.06