Finding the Third Proportional to 405,031.50 and 886,311

Step by Step Solution

1. Step 1: Write the proportion equation
   405,031.50 : 886,311 = 886,311 : x
2. Step 2: Convert to fraction form
   405,031.50/886,311 = 886,311/x
3. Step 3: Cross multiply
   405,031.50x = 886,311 × 886,311
4. Step 4: Simplify right side
   405,031.50x = 785,547,188,721
5. Step 5: Solve for x
   x = 785,547,188,721/405,031.50
6. Step 6: Final answer
   x = 1,939,471.84