Finding the Third Proportional to 684,250.50 and 985,638

Step by Step Solution

1. Step 1: Write the proportion equation
   684,250.50 : 985,638 = 985,638 : x
2. Step 2: Convert to fraction form
   684,250.50/985,638 = 985,638/x
3. Step 3: Cross multiply
   684,250.50x = 985,638 × 985,638
4. Step 4: Simplify right side
   684,250.50x = 971,482,267,044
5. Step 5: Solve for x
   x = 971,482,267,044/684,250.50
6. Step 6: Final answer
   x = 1,419,775.75