Finding the Third Proportional to 311,095.50 and 666,255

Step by Step Solution

1. Step 1: Write the proportion equation
   311,095.50 : 666,255 = 666,255 : x
2. Step 2: Convert to fraction form
   311,095.50/666,255 = 666,255/x
3. Step 3: Cross multiply
   311,095.50x = 666,255 × 666,255
4. Step 4: Simplify right side
   311,095.50x = 443,895,725,025
5. Step 5: Solve for x
   x = 443,895,725,025/311,095.50
6. Step 6: Final answer
   x = 1,426,879.29