Finding the Third Proportional to 305,160.50 and 443,889

Step by Step Solution

1. Step 1: Write the proportion equation
   305,160.50 : 443,889 = 443,889 : x
2. Step 2: Convert to fraction form
   305,160.50/443,889 = 443,889/x
3. Step 3: Cross multiply
   305,160.50x = 443,889 × 443,889
4. Step 4: Simplify right side
   305,160.50x = 197,037,444,321
5. Step 5: Solve for x
   x = 197,037,444,321/305,160.50
6. Step 6: Final answer
   x = 645,684.63