Finding the Third Proportional to 78,522.50 and 171,998

Step by Step Solution

1. Step 1: Write the proportion equation
   78,522.50 : 171,998 = 171,998 : x
2. Step 2: Convert to fraction form
   78,522.50/171,998 = 171,998/x
3. Step 3: Cross multiply
   78,522.50x = 171,998 × 171,998
4. Step 4: Simplify right side
   78,522.50x = 29,583,312,004
5. Step 5: Solve for x
   x = 29,583,312,004/78,522.50
6. Step 6: Final answer
   x = 376,749.49