Finding the Third Proportional to 395,407.50 and 612,774

Step by Step Solution

1. Step 1: Write the proportion equation
   395,407.50 : 612,774 = 612,774 : x
2. Step 2: Convert to fraction form
   395,407.50/612,774 = 612,774/x
3. Step 3: Cross multiply
   395,407.50x = 612,774 × 612,774
4. Step 4: Simplify right side
   395,407.50x = 375,491,975,076
5. Step 5: Solve for x
   x = 375,491,975,076/395,407.50
6. Step 6: Final answer
   x = 949,632.91