Finding the Third Proportional to 90,799 and 140,028

Step by Step Solution

1. Step 1: Write the proportion equation
   90,799 : 140,028 = 140,028 : x
2. Step 2: Convert to fraction form
   90,799/140,028 = 140,028/x
3. Step 3: Cross multiply
   90,799x = 140,028 × 140,028
4. Step 4: Simplify right side
   90,799x = 19,607,840,784
5. Step 5: Solve for x
   x = 19,607,840,784/90,799
6. Step 6: Final answer
   x = 215,947.76