Finding the Third Proportional to 442,932 and 687,148.50

Step by Step Solution

1. Step 1: Write the proportion equation
   442,932 : 687,148.50 = 687,148.50 : x
2. Step 2: Convert to fraction form
   442,932/687,148.50 = 687,148.50/x
3. Step 3: Cross multiply
   442,932x = 687,148.50 × 687,148.50
4. Step 4: Simplify right side
   442,932x = 472,173,061,052.25
5. Step 5: Solve for x
   x = 472,173,061,052.25/442,932
6. Step 6: Final answer
   x = 1,066,017.04