Finding the Third Proportional to 569,778 and 1,215,819

Step by Step Solution

1. Step 1: Write the proportion equation
   569,778 : 1,215,819 = 1,215,819 : x
2. Step 2: Convert to fraction form
   569,778/1,215,819 = 1,215,819/x
3. Step 3: Cross multiply
   569,778x = 1,215,819 × 1,215,819
4. Step 4: Simplify right side
   569,778x = 1,478,215,840,761
5. Step 5: Solve for x
   x = 1,478,215,840,761/569,778
6. Step 6: Final answer
   x = 2,594,371.56