Finding the Third Proportional to 67,688 and 99,570

Step by Step Solution

1. Step 1: Write the proportion equation
   67,688 : 99,570 = 99,570 : x
2. Step 2: Convert to fraction form
   67,688/99,570 = 99,570/x
3. Step 3: Cross multiply
   67,688x = 99,570 × 99,570
4. Step 4: Simplify right side
   67,688x = 9,914,184,900
5. Step 5: Solve for x
   x = 9,914,184,900/67,688
6. Step 6: Final answer
   x = 146,468.87