Finding the Third Proportional to 332,656.50 and 715,128

Step by Step Solution

1. Step 1: Write the proportion equation
   332,656.50 : 715,128 = 715,128 : x
2. Step 2: Convert to fraction form
   332,656.50/715,128 = 715,128/x
3. Step 3: Cross multiply
   332,656.50x = 715,128 × 715,128
4. Step 4: Simplify right side
   332,656.50x = 511,408,056,384
5. Step 5: Solve for x
   x = 511,408,056,384/332,656.50
6. Step 6: Final answer
   x = 1,537,345.75