Finding the Third Proportional to 780,300 and 1,677,000

Step by Step Solution

1. Step 1: Write the proportion equation
   780,300 : 1,677,000 = 1,677,000 : x
2. Step 2: Convert to fraction form
   780,300/1,677,000 = 1,677,000/x
3. Step 3: Cross multiply
   780,300x = 1,677,000 × 1,677,000
4. Step 4: Simplify right side
   780,300x = 2,812,329,000,000
5. Step 5: Solve for x
   x = 2,812,329,000,000/780,300
6. Step 6: Final answer
   x = 3,604,163.78