Finding the Third Proportional to 865,678.50 and 1,293,672

Step by Step Solution

1. Step 1: Write the proportion equation
   865,678.50 : 1,293,672 = 1,293,672 : x
2. Step 2: Convert to fraction form
   865,678.50/1,293,672 = 1,293,672/x
3. Step 3: Cross multiply
   865,678.50x = 1,293,672 × 1,293,672
4. Step 4: Simplify right side
   865,678.50x = 1,673,587,243,584
5. Step 5: Solve for x
   x = 1,673,587,243,584/865,678.50
6. Step 6: Final answer
   x = 1,933,266.50