Finding the Third Proportional to 119,154 and 248,109

Step by Step Solution

1. Step 1: Write the proportion equation
   119,154 : 248,109 = 248,109 : x
2. Step 2: Convert to fraction form
   119,154/248,109 = 248,109/x
3. Step 3: Cross multiply
   119,154x = 248,109 × 248,109
4. Step 4: Simplify right side
   119,154x = 61,558,075,881
5. Step 5: Solve for x
   x = 61,558,075,881/119,154
6. Step 6: Final answer
   x = 516,626.18