Finding the Third Proportional to 563,877 and 1,215,780

Step by Step Solution

1. Step 1: Write the proportion equation
   563,877 : 1,215,780 = 1,215,780 : x
2. Step 2: Convert to fraction form
   563,877/1,215,780 = 1,215,780/x
3. Step 3: Cross multiply
   563,877x = 1,215,780 × 1,215,780
4. Step 4: Simplify right side
   563,877x = 1,478,121,008,400
5. Step 5: Solve for x
   x = 1,478,121,008,400/563,877
6. Step 6: Final answer
   x = 2,621,353.61