Finding the Third Proportional to 72,812 and 109,730

Step by Step Solution

1. Step 1: Write the proportion equation
   72,812 : 109,730 = 109,730 : x
2. Step 2: Convert to fraction form
   72,812/109,730 = 109,730/x
3. Step 3: Cross multiply
   72,812x = 109,730 × 109,730
4. Step 4: Simplify right side
   72,812x = 12,040,672,900
5. Step 5: Solve for x
   x = 12,040,672,900/72,812
6. Step 6: Final answer
   x = 165,366.60