Finding the Third Proportional to 116,290 and 251,168

Step by Step Solution

1. Step 1: Write the proportion equation
   116,290 : 251,168 = 251,168 : x
2. Step 2: Convert to fraction form
   116,290/251,168 = 251,168/x
3. Step 3: Cross multiply
   116,290x = 251,168 × 251,168
4. Step 4: Simplify right side
   116,290x = 63,085,364,224
5. Step 5: Solve for x
   x = 63,085,364,224/116,290
6. Step 6: Final answer
   x = 542,483.14