Finding the Third Proportional to 42,329 and 90,487

Step by Step Solution

1. Step 1: Write the proportion equation
   42,329 : 90,487 = 90,487 : x
2. Step 2: Convert to fraction form
   42,329/90,487 = 90,487/x
3. Step 3: Cross multiply
   42,329x = 90,487 × 90,487
4. Step 4: Simplify right side
   42,329x = 8,187,897,169
5. Step 5: Solve for x
   x = 8,187,897,169/42,329
6. Step 6: Final answer
   x = 193,434.69