Finding the Third Proportional to 123,718.50 and 275,769

Step by Step Solution

1. Step 1: Write the proportion equation
   123,718.50 : 275,769 = 275,769 : x
2. Step 2: Convert to fraction form
   123,718.50/275,769 = 275,769/x
3. Step 3: Cross multiply
   123,718.50x = 275,769 × 275,769
4. Step 4: Simplify right side
   123,718.50x = 76,048,541,361
5. Step 5: Solve for x
   x = 76,048,541,361/123,718.50
6. Step 6: Final answer
   x = 614,690.13