Finding the Third Proportional to 48,142 and 72,423

Step by Step Solution

1. Step 1: Write the proportion equation
   48,142 : 72,423 = 72,423 : x
2. Step 2: Convert to fraction form
   48,142/72,423 = 72,423/x
3. Step 3: Cross multiply
   48,142x = 72,423 × 72,423
4. Step 4: Simplify right side
   48,142x = 5,245,090,929
5. Step 5: Solve for x
   x = 5,245,090,929/48,142
6. Step 6: Final answer
   x = 108,950.42