Finding the Third Proportional to 42,136.59 and 90,270.28

Step by Step Solution

1. Step 1: Write the proportion equation
   42,136.59 : 90,270.28 = 90,270.28 : x
2. Step 2: Convert to fraction form
   42,136.59/90,270.28 = 90,270.28/x
3. Step 3: Cross multiply
   42,136.59x = 90,270.28 × 90,270.28
4. Step 4: Simplify right side
   42,136.59x = 8,148,723,676.95
5. Step 5: Solve for x
   x = 8,148,723,676.95/42,136.59
6. Step 6: Final answer
   x = 193,388.29