Finding the Third Proportional to 116,345 and 254,479

Step by Step Solution

1. Step 1: Write the proportion equation
   116,345 : 254,479 = 254,479 : x
2. Step 2: Convert to fraction form
   116,345/254,479 = 254,479/x
3. Step 3: Cross multiply
   116,345x = 254,479 × 254,479
4. Step 4: Simplify right side
   116,345x = 64,759,561,441
5. Step 5: Solve for x
   x = 64,759,561,441/116,345
6. Step 6: Final answer
   x = 556,616.63