Finding the Third Proportional to 90,485 and 140,898

Step by Step Solution

1. Step 1: Write the proportion equation
   90,485 : 140,898 = 140,898 : x
2. Step 2: Convert to fraction form
   90,485/140,898 = 140,898/x
3. Step 3: Cross multiply
   90,485x = 140,898 × 140,898
4. Step 4: Simplify right side
   90,485x = 19,852,246,404
5. Step 5: Solve for x
   x = 19,852,246,404/90,485
6. Step 6: Final answer
   x = 219,398.20