Finding the Third Proportional to 278,059.50 and 607,081.50

Step by Step Solution

1. Step 1: Write the proportion equation
   278,059.50 : 607,081.50 = 607,081.50 : x
2. Step 2: Convert to fraction form
   278,059.50/607,081.50 = 607,081.50/x
3. Step 3: Cross multiply
   278,059.50x = 607,081.50 × 607,081.50
4. Step 4: Simplify right side
   278,059.50x = 368,547,947,642.25
5. Step 5: Solve for x
   x = 368,547,947,642.25/278,059.50
6. Step 6: Final answer
   x = 1,325,428.36