Finding the Third Proportional to 585,603 and 859,936.50

Step by Step Solution

1. Step 1: Write the proportion equation
   585,603 : 859,936.50 = 859,936.50 : x
2. Step 2: Convert to fraction form
   585,603/859,936.50 = 859,936.50/x
3. Step 3: Cross multiply
   585,603x = 859,936.50 × 859,936.50
4. Step 4: Simplify right side
   585,603x = 739,490,784,032.25
5. Step 5: Solve for x
   x = 739,490,784,032.25/585,603
6. Step 6: Final answer
   x = 1,262,785.17