Finding the Third Proportional to 90,351 and 134,218.50

Step by Step Solution

1. Step 1: Write the proportion equation
   90,351 : 134,218.50 = 134,218.50 : x
2. Step 2: Convert to fraction form
   90,351/134,218.50 = 134,218.50/x
3. Step 3: Cross multiply
   90,351x = 134,218.50 × 134,218.50
4. Step 4: Simplify right side
   90,351x = 18,014,605,742.25
5. Step 5: Solve for x
   x = 18,014,605,742.25/90,351
6. Step 6: Final answer
   x = 199,384.69