Finding the Third Proportional to 78,665 and 124,624

Step by Step Solution

1. Step 1: Write the proportion equation
   78,665 : 124,624 = 124,624 : x
2. Step 2: Convert to fraction form
   78,665/124,624 = 124,624/x
3. Step 3: Cross multiply
   78,665x = 124,624 × 124,624
4. Step 4: Simplify right side
   78,665x = 15,531,141,376
5. Step 5: Solve for x
   x = 15,531,141,376/78,665
6. Step 6: Final answer
   x = 197,433.95