Finding the Third Proportional to 42,243 and 90,726

Step by Step Solution

1. Step 1: Write the proportion equation
   42,243 : 90,726 = 90,726 : x
2. Step 2: Convert to fraction form
   42,243/90,726 = 90,726/x
3. Step 3: Cross multiply
   42,243x = 90,726 × 90,726
4. Step 4: Simplify right side
   42,243x = 8,231,207,076
5. Step 5: Solve for x
   x = 8,231,207,076/42,243
6. Step 6: Final answer
   x = 194,853.75