Finding the Third Proportional to 298,111.50 and 443,112.75

Step by Step Solution

1. Step 1: Write the proportion equation
   298,111.50 : 443,112.75 = 443,112.75 : x
2. Step 2: Convert to fraction form
   298,111.50/443,112.75 = 443,112.75/x
3. Step 3: Cross multiply
   298,111.50x = 443,112.75 × 443,112.75
4. Step 4: Simplify right side
   298,111.50x = 196,348,909,212.56
5. Step 5: Solve for x
   x = 196,348,909,212.56/298,111.50
6. Step 6: Final answer
   x = 658,642.52