Finding the Third Proportional to 67,088.25 and 90,426.38

Step by Step Solution

1. Step 1: Write the proportion equation
   67,088.25 : 90,426.38 = 90,426.38 : x
2. Step 2: Convert to fraction form
   67,088.25/90,426.38 = 90,426.38/x
3. Step 3: Cross multiply
   67,088.25x = 90,426.38 × 90,426.38
4. Step 4: Simplify right side
   67,088.25x = 8,176,929,295.64
5. Step 5: Solve for x
   x = 8,176,929,295.64/67,088.25
6. Step 6: Final answer
   x = 121,883.18