Finding the Third Proportional to 1,485,328 and 2,165,400

Step by Step Solution

1. Step 1: Write the proportion equation
   1,485,328 : 2,165,400 = 2,165,400 : x
2. Step 2: Convert to fraction form
   1,485,328/2,165,400 = 2,165,400/x
3. Step 3: Cross multiply
   1,485,328x = 2,165,400 × 2,165,400
4. Step 4: Simplify right side
   1,485,328x = 4,688,957,160,000
5. Step 5: Solve for x
   x = 4,688,957,160,000/1,485,328
6. Step 6: Final answer
   x = 3,156,849.64