Finding the Third Proportional to 385,515 and 835,384.50

Step by Step Solution

1. Step 1: Write the proportion equation
   385,515 : 835,384.50 = 835,384.50 : x
2. Step 2: Convert to fraction form
   385,515/835,384.50 = 835,384.50/x
3. Step 3: Cross multiply
   385,515x = 835,384.50 × 835,384.50
4. Step 4: Simplify right side
   385,515x = 697,867,262,840.25
5. Step 5: Solve for x
   x = 697,867,262,840.25/385,515
6. Step 6: Final answer
   x = 1,810,220.78