Finding the Third Proportional to 2,102,217 and 2,912,155

Step by Step Solution

1. Step 1: Write the proportion equation
   2,102,217 : 2,912,155 = 2,912,155 : x
2. Step 2: Convert to fraction form
   2,102,217/2,912,155 = 2,912,155/x
3. Step 3: Cross multiply
   2,102,217x = 2,912,155 × 2,912,155
4. Step 4: Simplify right side
   2,102,217x = 8,480,646,744,025
5. Step 5: Solve for x
   x = 8,480,646,744,025/2,102,217
6. Step 6: Final answer
   x = 4,034,144.31