Finding the Third Proportional to 302,512.50 and 660,042

Step by Step Solution

1. Step 1: Write the proportion equation
   302,512.50 : 660,042 = 660,042 : x
2. Step 2: Convert to fraction form
   302,512.50/660,042 = 660,042/x
3. Step 3: Cross multiply
   302,512.50x = 660,042 × 660,042
4. Step 4: Simplify right side
   302,512.50x = 435,655,441,764
5. Step 5: Solve for x
   x = 435,655,441,764/302,512.50
6. Step 6: Final answer
   x = 1,440,123.77