Finding the Third Proportional to 787,290 and 1,222,407

Step by Step Solution

1. Step 1: Write the proportion equation
   787,290 : 1,222,407 = 1,222,407 : x
2. Step 2: Convert to fraction form
   787,290/1,222,407 = 1,222,407/x
3. Step 3: Cross multiply
   787,290x = 1,222,407 × 1,222,407
4. Step 4: Simplify right side
   787,290x = 1,494,278,873,649
5. Step 5: Solve for x
   x = 1,494,278,873,649/787,290
6. Step 6: Final answer
   x = 1,898,003.12