Finding the Third Proportional to 42,660 and 90,237

Step by Step Solution

1. Step 1: Write the proportion equation
   42,660 : 90,237 = 90,237 : x
2. Step 2: Convert to fraction form
   42,660/90,237 = 90,237/x
3. Step 3: Cross multiply
   42,660x = 90,237 × 90,237
4. Step 4: Simplify right side
   42,660x = 8,142,716,169
5. Step 5: Solve for x
   x = 8,142,716,169/42,660
6. Step 6: Final answer
   x = 190,874.73