Finding the Third Proportional to 90,569 and 143,261

Step by Step Solution

1. Step 1: Write the proportion equation
   90,569 : 143,261 = 143,261 : x
2. Step 2: Convert to fraction form
   90,569/143,261 = 143,261/x
3. Step 3: Cross multiply
   90,569x = 143,261 × 143,261
4. Step 4: Simplify right side
   90,569x = 20,523,714,121
5. Step 5: Solve for x
   x = 20,523,714,121/90,569
6. Step 6: Final answer
   x = 226,608.60