Finding the Third Proportional to 585,144 and 875,346.75

Step by Step Solution

1. Step 1: Write the proportion equation
   585,144 : 875,346.75 = 875,346.75 : x
2. Step 2: Convert to fraction form
   585,144/875,346.75 = 875,346.75/x
3. Step 3: Cross multiply
   585,144x = 875,346.75 × 875,346.75
4. Step 4: Simplify right side
   585,144x = 766,231,932,735.56
5. Step 5: Solve for x
   x = 766,231,932,735.56/585,144
6. Step 6: Final answer
   x = 1,309,475.84