Finding the Third Proportional to 442,956 and 687,193.50

Step by Step Solution

1. Step 1: Write the proportion equation
   442,956 : 687,193.50 = 687,193.50 : x
2. Step 2: Convert to fraction form
   442,956/687,193.50 = 687,193.50/x
3. Step 3: Cross multiply
   442,956x = 687,193.50 × 687,193.50
4. Step 4: Simplify right side
   442,956x = 472,234,906,442.25
5. Step 5: Solve for x
   x = 472,234,906,442.25/442,956
6. Step 6: Final answer
   x = 1,066,098.90