Finding the Third Proportional to 299,116.75 and 443,978.50

Step by Step Solution

1. Step 1: Write the proportion equation
   299,116.75 : 443,978.50 = 443,978.50 : x
2. Step 2: Convert to fraction form
   299,116.75/443,978.50 = 443,978.50/x
3. Step 3: Cross multiply
   299,116.75x = 443,978.50 × 443,978.50
4. Step 4: Simplify right side
   299,116.75x = 197,116,908,462.25
5. Step 5: Solve for x
   x = 197,116,908,462.25/299,116.75
6. Step 6: Final answer
   x = 658,996.56