Finding the Third Proportional to 90,140 and 141,399

Step by Step Solution

1. Step 1: Write the proportion equation
   90,140 : 141,399 = 141,399 : x
2. Step 2: Convert to fraction form
   90,140/141,399 = 141,399/x
3. Step 3: Cross multiply
   90,140x = 141,399 × 141,399
4. Step 4: Simplify right side
   90,140x = 19,993,677,201
5. Step 5: Solve for x
   x = 19,993,677,201/90,140
6. Step 6: Final answer
   x = 221,806.94