Finding the Third Proportional to 67,680 and 99,558

Step by Step Solution

1. Step 1: Write the proportion equation
   67,680 : 99,558 = 99,558 : x
2. Step 2: Convert to fraction form
   67,680/99,558 = 99,558/x
3. Step 3: Cross multiply
   67,680x = 99,558 × 99,558
4. Step 4: Simplify right side
   67,680x = 9,911,795,364
5. Step 5: Solve for x
   x = 9,911,795,364/67,680
6. Step 6: Final answer
   x = 146,450.88