Finding the Third Proportional to 563,906 and 1,215,836

Step by Step Solution

1. Step 1: Write the proportion equation
   563,906 : 1,215,836 = 1,215,836 : x
2. Step 2: Convert to fraction form
   563,906/1,215,836 = 1,215,836/x
3. Step 3: Cross multiply
   563,906x = 1,215,836 × 1,215,836
4. Step 4: Simplify right side
   563,906x = 1,478,257,178,896
5. Step 5: Solve for x
   x = 1,478,257,178,896/563,906
6. Step 6: Final answer
   x = 2,621,460.28