Finding the Third Proportional to 239,779.50 and 525,243

Step by Step Solution

1. Step 1: Write the proportion equation
   239,779.50 : 525,243 = 525,243 : x
2. Step 2: Convert to fraction form
   239,779.50/525,243 = 525,243/x
3. Step 3: Cross multiply
   239,779.50x = 525,243 × 525,243
4. Step 4: Simplify right side
   239,779.50x = 275,880,209,049
5. Step 5: Solve for x
   x = 275,880,209,049/239,779.50
6. Step 6: Final answer
   x = 1,150,557.95