Finding the Third Proportional to 78,453.50 and 171,487

Step by Step Solution

1. Step 1: Write the proportion equation
   78,453.50 : 171,487 = 171,487 : x
2. Step 2: Convert to fraction form
   78,453.50/171,487 = 171,487/x
3. Step 3: Cross multiply
   78,453.50x = 171,487 × 171,487
4. Step 4: Simplify right side
   78,453.50x = 29,407,791,169
5. Step 5: Solve for x
   x = 29,407,791,169/78,453.50
6. Step 6: Final answer
   x = 374,843.58