Finding the Third Proportional to 395,404.50 and 612,769.50

Step by Step Solution

1. Step 1: Write the proportion equation
   395,404.50 : 612,769.50 = 612,769.50 : x
2. Step 2: Convert to fraction form
   395,404.50/612,769.50 = 612,769.50/x
3. Step 3: Cross multiply
   395,404.50x = 612,769.50 × 612,769.50
4. Step 4: Simplify right side
   395,404.50x = 375,486,460,130.25
5. Step 5: Solve for x
   x = 375,486,460,130.25/395,404.50
6. Step 6: Final answer
   x = 949,626.17