Finding the Third Proportional to 90,086 and 141,309

Step by Step Solution

1. Step 1: Write the proportion equation
   90,086 : 141,309 = 141,309 : x
2. Step 2: Convert to fraction form
   90,086/141,309 = 141,309/x
3. Step 3: Cross multiply
   90,086x = 141,309 × 141,309
4. Step 4: Simplify right side
   90,086x = 19,968,233,481
5. Step 5: Solve for x
   x = 19,968,233,481/90,086
6. Step 6: Final answer
   x = 221,657.45