Finding the Third Proportional to 42,146.26 and 90,289.69

Step by Step Solution

1. Step 1: Write the proportion equation
   42,146.26 : 90,289.69 = 90,289.69 : x
2. Step 2: Convert to fraction form
   42,146.26/90,289.69 = 90,289.69/x
3. Step 3: Cross multiply
   42,146.26x = 90,289.69 × 90,289.69
4. Step 4: Simplify right side
   42,146.26x = 8,152,227,668.85
5. Step 5: Solve for x
   x = 8,152,227,668.85/42,146.26
6. Step 6: Final answer
   x = 193,427.06