Finding the Third Proportional to 279,427.50 and 443,189.50

Step by Step Solution

1. Step 1: Write the proportion equation
   279,427.50 : 443,189.50 = 443,189.50 : x
2. Step 2: Convert to fraction form
   279,427.50/443,189.50 = 443,189.50/x
3. Step 3: Cross multiply
   279,427.50x = 443,189.50 × 443,189.50
4. Step 4: Simplify right side
   279,427.50x = 196,416,932,910.25
5. Step 5: Solve for x
   x = 196,416,932,910.25/279,427.50
6. Step 6: Final answer
   x = 702,926.28