Finding the Third Proportional to 1,008,207 and 2,215,188

Step by Step Solution

1. Step 1: Write the proportion equation
   1,008,207 : 2,215,188 = 2,215,188 : x
2. Step 2: Convert to fraction form
   1,008,207/2,215,188 = 2,215,188/x
3. Step 3: Cross multiply
   1,008,207x = 2,215,188 × 2,215,188
4. Step 4: Simplify right side
   1,008,207x = 4,907,057,875,344
5. Step 5: Solve for x
   x = 4,907,057,875,344/1,008,207
6. Step 6: Final answer
   x = 4,867,113.48