Finding the Third Proportional to 42,828 and 90,271.50

Step by Step Solution

1. Step 1: Write the proportion equation
   42,828 : 90,271.50 = 90,271.50 : x
2. Step 2: Convert to fraction form
   42,828/90,271.50 = 90,271.50/x
3. Step 3: Cross multiply
   42,828x = 90,271.50 × 90,271.50
4. Step 4: Simplify right side
   42,828x = 8,148,943,712.25
5. Step 5: Solve for x
   x = 8,148,943,712.25/42,828
6. Step 6: Final answer
   x = 190,271.40