Finding the Third Proportional to 1,528,328 and 3,180,700

Step by Step Solution

1. Step 1: Write the proportion equation
   1,528,328 : 3,180,700 = 3,180,700 : x
2. Step 2: Convert to fraction form
   1,528,328/3,180,700 = 3,180,700/x
3. Step 3: Cross multiply
   1,528,328x = 3,180,700 × 3,180,700
4. Step 4: Simplify right side
   1,528,328x = 10,116,852,490,000
5. Step 5: Solve for x
   x = 10,116,852,490,000/1,528,328
6. Step 6: Final answer
   x = 6,619,555.81