Finding the Third Proportional to 64,518 and 89,151

Step by Step Solution

1. Step 1: Write the proportion equation
   64,518 : 89,151 = 89,151 : x
2. Step 2: Convert to fraction form
   64,518/89,151 = 89,151/x
3. Step 3: Cross multiply
   64,518x = 89,151 × 89,151
4. Step 4: Simplify right side
   64,518x = 7,947,900,801
5. Step 5: Solve for x
   x = 7,947,900,801/64,518
6. Step 6: Final answer
   x = 123,188.89