Finding the Third Proportional to 375,678 and 550,030.50

Step by Step Solution

1. Step 1: Write the proportion equation
   375,678 : 550,030.50 = 550,030.50 : x
2. Step 2: Convert to fraction form
   375,678/550,030.50 = 550,030.50/x
3. Step 3: Cross multiply
   375,678x = 550,030.50 × 550,030.50
4. Step 4: Simplify right side
   375,678x = 302,533,550,930.25
5. Step 5: Solve for x
   x = 302,533,550,930.25/375,678
6. Step 6: Final answer
   x = 805,300.15