Finding the Third Proportional to 563,889 and 1,215,801

Step by Step Solution

1. Step 1: Write the proportion equation
   563,889 : 1,215,801 = 1,215,801 : x
2. Step 2: Convert to fraction form
   563,889/1,215,801 = 1,215,801/x
3. Step 3: Cross multiply
   563,889x = 1,215,801 × 1,215,801
4. Step 4: Simplify right side
   563,889x = 1,478,172,071,601
5. Step 5: Solve for x
   x = 1,478,172,071,601/563,889
6. Step 6: Final answer
   x = 2,621,388.38