Finding the Third Proportional to 42,311 and 90,155

Step by Step Solution

1. Step 1: Write the proportion equation
   42,311 : 90,155 = 90,155 : x
2. Step 2: Convert to fraction form
   42,311/90,155 = 90,155/x
3. Step 3: Cross multiply
   42,311x = 90,155 × 90,155
4. Step 4: Simplify right side
   42,311x = 8,127,924,025
5. Step 5: Solve for x
   x = 8,127,924,025/42,311
6. Step 6: Final answer
   x = 192,099.55