Finding the Third Proportional to 47,172 and 64,917

Step by Step Solution

1. Step 1: Write the proportion equation
   47,172 : 64,917 = 64,917 : x
2. Step 2: Convert to fraction form
   47,172/64,917 = 64,917/x
3. Step 3: Cross multiply
   47,172x = 64,917 × 64,917
4. Step 4: Simplify right side
   47,172x = 4,214,216,889
5. Step 5: Solve for x
   x = 4,214,216,889/47,172
6. Step 6: Final answer
   x = 89,337.25