Finding the Third Proportional to 123,219 and 266,100.75

Step by Step Solution

1. Step 1: Write the proportion equation
   123,219 : 266,100.75 = 266,100.75 : x
2. Step 2: Convert to fraction form
   123,219/266,100.75 = 266,100.75/x
3. Step 3: Cross multiply
   123,219x = 266,100.75 × 266,100.75
4. Step 4: Simplify right side
   123,219x = 70,809,609,150.56
5. Step 5: Solve for x
   x = 70,809,609,150.56/123,219
6. Step 6: Final answer
   x = 574,664.70