Finding the Third Proportional to 57,830 and 90,738

Step by Step Solution

1. Step 1: Write the proportion equation
   57,830 : 90,738 = 90,738 : x
2. Step 2: Convert to fraction form
   57,830/90,738 = 90,738/x
3. Step 3: Cross multiply
   57,830x = 90,738 × 90,738
4. Step 4: Simplify right side
   57,830x = 8,233,384,644
5. Step 5: Solve for x
   x = 8,233,384,644/57,830
6. Step 6: Final answer
   x = 142,372.21