Finding the Third Proportional to 90,159 and 140,153

Step by Step Solution

1. Step 1: Write the proportion equation
   90,159 : 140,153 = 140,153 : x
2. Step 2: Convert to fraction form
   90,159/140,153 = 140,153/x
3. Step 3: Cross multiply
   90,159x = 140,153 × 140,153
4. Step 4: Simplify right side
   90,159x = 19,642,863,409
5. Step 5: Solve for x
   x = 19,642,863,409/90,159
6. Step 6: Final answer
   x = 217,869.14