Finding the Third Proportional to 78,981 and 187,488

Step by Step Solution

1. Step 1: Write the proportion equation
   78,981 : 187,488 = 187,488 : x
2. Step 2: Convert to fraction form
   78,981/187,488 = 187,488/x
3. Step 3: Cross multiply
   78,981x = 187,488 × 187,488
4. Step 4: Simplify right side
   78,981x = 35,151,750,144
5. Step 5: Solve for x
   x = 35,151,750,144/78,981
6. Step 6: Final answer
   x = 445,065.90