Finding the Third Proportional to 42,311 and 90,056

Step by Step Solution

1. Step 1: Write the proportion equation
   42,311 : 90,056 = 90,056 : x
2. Step 2: Convert to fraction form
   42,311/90,056 = 90,056/x
3. Step 3: Cross multiply
   42,311x = 90,056 × 90,056
4. Step 4: Simplify right side
   42,311x = 8,110,083,136
5. Step 5: Solve for x
   x = 8,110,083,136/42,311
6. Step 6: Final answer
   x = 191,677.89