Finding the Third Proportional to 817,860 and 1,241,505

Step by Step Solution

1. Step 1: Write the proportion equation
   817,860 : 1,241,505 = 1,241,505 : x
2. Step 2: Convert to fraction form
   817,860/1,241,505 = 1,241,505/x
3. Step 3: Cross multiply
   817,860x = 1,241,505 × 1,241,505
4. Step 4: Simplify right side
   817,860x = 1,541,334,665,025
5. Step 5: Solve for x
   x = 1,541,334,665,025/817,860
6. Step 6: Final answer
   x = 1,884,594.75