Finding the Third Proportional to 168,186 and 259,715.25

Step by Step Solution

1. Step 1: Write the proportion equation
   168,186 : 259,715.25 = 259,715.25 : x
2. Step 2: Convert to fraction form
   168,186/259,715.25 = 259,715.25/x
3. Step 3: Cross multiply
   168,186x = 259,715.25 × 259,715.25
4. Step 4: Simplify right side
   168,186x = 67,452,011,082.56
5. Step 5: Solve for x
   x = 67,452,011,082.56/168,186
6. Step 6: Final answer
   x = 401,056.04