Finding the Third Proportional to 585,495 and 1,278,139.50

Step by Step Solution

1. Step 1: Write the proportion equation
   585,495 : 1,278,139.50 = 1,278,139.50 : x
2. Step 2: Convert to fraction form
   585,495/1,278,139.50 = 1,278,139.50/x
3. Step 3: Cross multiply
   585,495x = 1,278,139.50 × 1,278,139.50
4. Step 4: Simplify right side
   585,495x = 1,633,640,581,460.25
5. Step 5: Solve for x
   x = 1,633,640,581,460.25/585,495
6. Step 6: Final answer
   x = 2,790,187.07