Finding the Third Proportional to 356,564.50 and 840,871

Step by Step Solution

1. Step 1: Write the proportion equation
   356,564.50 : 840,871 = 840,871 : x
2. Step 2: Convert to fraction form
   356,564.50/840,871 = 840,871/x
3. Step 3: Cross multiply
   356,564.50x = 840,871 × 840,871
4. Step 4: Simplify right side
   356,564.50x = 707,064,038,641
5. Step 5: Solve for x
   x = 707,064,038,641/356,564.50
6. Step 6: Final answer
   x = 1,982,990.56