Finding the Third Proportional to 1,553,638 and 3,323,156

Step by Step Solution

1. Step 1: Write the proportion equation
   1,553,638 : 3,323,156 = 3,323,156 : x
2. Step 2: Convert to fraction form
   1,553,638/3,323,156 = 3,323,156/x
3. Step 3: Cross multiply
   1,553,638x = 3,323,156 × 3,323,156
4. Step 4: Simplify right side
   1,553,638x = 11,043,365,800,336
5. Step 5: Solve for x
   x = 11,043,365,800,336/1,553,638
6. Step 6: Final answer
   x = 7,108,068.80