Finding the Third Proportional to 116,143 and 254,429

Step by Step Solution

1. Step 1: Write the proportion equation
   116,143 : 254,429 = 254,429 : x
2. Step 2: Convert to fraction form
   116,143/254,429 = 254,429/x
3. Step 3: Cross multiply
   116,143x = 254,429 × 254,429
4. Step 4: Simplify right side
   116,143x = 64,734,116,041
5. Step 5: Solve for x
   x = 64,734,116,041/116,143
6. Step 6: Final answer
   x = 557,365.63